Click options standard toolbar, or click tools options. Solidworks equal curvature relation for splines and conics. Oct 03, 2016 by toggling on the option for multiple radius fillet, we were able to set two of these fillets to have a radius of 1. Our gear and cam software products provide the designer with tools to create solid models of drive components in seconds rather than hours or days. Solidworks 2012 hints and tips multiple radius fillet with setback duration. Curvature can be mathematically defined as the inverse of the radius i. Dec 22, 2017 the curvature display tool viewdisplay curvature displays the local radius of curvature in different colors based off of the curvature value. And its asking us which one of these values, a, b, c, or d is the correct answer for the surface area. In this video, alex aprigliano shows how to create a fillet of variable radius along an edge in solidworks. This will put only work with full circles which may not help you in your case but it will put the circles on a different level, name the level based on the circle diameter and change the colour of the arc. How to add a curvature continous fillet in solidworks. The solidworks software identifies these special cases and solves the topology required to avoid selfintersecting faces. Innova systems is an authorised value added reseller for solidworks 3d design software.
The center radius is the radius at the arclength center of the fillet. To diagnose the situation ive created a closed spline in the shape of a circle including these constraints. Camtrax64 solidworks 3d cad design software solidworks. May 17, 2016 solidworks 2012 hints and tips multiple radius fillet with setback duration. Its easy to plop down a few points and create a nice, curvy spline. The following images show some meshes obtained when specifying curvaturebased refinement. Proceedings of 105th the iier international conference, bangkok, thailand, 5th6th june 2017 102 design and analysis of leaf spring for solar vehicle 1may mya darli cho, 2htay htay win, 3aung ko latt 1,2,3 department of mechanical engineering, mandalay technological university, mandalay, myanmar email. Ive been stuck for two days trying to get the shell feature to work. If we consider the best approximate circle radius that passes through a point on a complex surface or spline curve, the reciprocal of the radius 1r of this circle is the curvature of the surface or curve at that point. In the help documents, i only found curvature is defined as the reciprocal of the radius 1 radius, in current model units. Question asked by chris hb on nov 11, 2016 latest reply on nov 14. But when i do it, solidworks shows an error as stated above. This is what afaik most engineering cad programs uses. For continuity and curvature in solidworks part 2, we will focus on these concepts in a 3dimensional context inside of solidworks and the tools we can use to analyze them.
You can choose to have the mesher detect the minimum radius of curvature andor use the smallest mesh control element size. Spline fit points are constrained left, bottom and right 2. There are two tabs included in the radius of curvature dialog. Aug 04, 2015 these are available within the face fillet option continuous curvature and the constant radius fillet conic rho value, try between 0. Cadtek systems solidworks elite training and support 10,645 views. He has been working with solidworks software since 1998 and has. Select dynamic highlight from graphics view, then click ok. How to add a curvature continous fillet in solidworks youtube. Analysis of centrifugal pump impellers with modified micro. Nov 22, 2017 curvature can be mathematically defined as the inverse of the radius i. In alias we have a circular radius option which i guess is the less semantically correct equivalent of spherical. Dec 20, 2017 whether you are new to using cadcam software or a seasoned programmer, youll want to know where these options are and how to use them.
The peak radius is the minimum radius that the fillet is allowed to have at the top. Meshing a part appropriately might be tenuous at times, but it is certainly a lot easier in solidworks than just about any other software. Sketching easy radius in solidworks practical machinist. Getting a good aspect ratio around the smaller geometry can drive you and your computer a bit crazy, especially if you. Search find minimum radius curvature of surface vba in the solidworks knowledge base. Aug 31, 2017 the radius of curvature is the shortest distance between the sketch and its curvature center.
Solidworks simulation overview, part 1 digital engineering 247. A variable radius fillet allows transitions in radius within the same fillet. If the value of the wall thickness for the shell, or the thickness of the thicken feature is greater than this value, the feature will fail. Curvature out of plane curvature of the laminate in the x,y, and xydirection due to moisture or thermal loading. The blended curvature based smallest element size is 0.
Mar 30, 20 solidworks equal curvature relation for splines and conics video article by alin vargatu, cswe createdupdated march 30, 20 this is a great example of the benefits you get when you have a subscription contract with javelin and solidworks. During the design, camtrax64 generates charts when linked with excel and adds a profile list to your drawing. Find smallest inside radius in mastercam, or solidworks. Hovering your mouse over a part of the model will show the curature and radius of curvature at the cursor. If you choose the first option solidworks will take the smallest radius value and make that the smallest element size. We dont want to set the expectation that meshing is a problem for solidworks. Pick arc, 3 points, end, end radius 3 clicks constrain arc to be tangent to upper edge.
I want to switch back over here to the question here,you can see what its asking us for. Sep 09, 2016 if you have a 10mm radius and you offset this 9mm the newly created internal radius will be 1mm. Solidworks has a range of tools to allow finer control over the meshing process. They also can control how small areas are that they want to drive the tool into when controlling the minimal curvature radius. Charted are displacement, velocity, acceleration, pressure angle, cam shaft torque, radius of curvature, contact. An overview of the variable radius parameters section of the variable. It was included in the software when the product was first released back in 1995. They can be used for anything from cake molds to car design, tubing to turboprops. Oct, 2016 the splines curvature will begin and end with precisely the same curvature as its adjacent faces and will gradually blend to the curvature found at the peak of the fillet. If you choose both then it will take the smallest of the two. In the help documents, i only found curvature is defined as the reciprocal of the radius 1radius, in current model units. The curvature display tool viewdisplaycurvature displays the local radius of curvature in different colors based off of the curvature value.
Spline basically, a smooth curve with a constantly changing radius discussion. The suggestion given by john burrill perfect and it can apply to all kinds of curvatures. The advantages of using offline programming software for job shop manufacturers can be found in the additional cutting options offline cadcam systems like bobcad have to offer. Surfaces with the least amount of curvature are displayed in black and the colors change through blue, green, and red as the curvature values increase red indicating surfaces. This is one of a series of overview articles looking at simulation and optimization software products. This can all be created in a single feature, which is a great way to save some time as well as keep your feature tree nice and tidy. Gearteq gear component design addin software for solidworks.
The next step beyond that is controlling how those curves act. From this answer, i wish to make it abundantly clear to you that while one sphere can define two mirrors concave and convex, it takes two spheres to define a lens in the case of a perfect concave or convex mirror, you can complete the sphere and by the definition of radius of curvature, the radius of the sphere is the same as that of the mirror. Find minimum radius curvature of surface vba solidworks. Circular, conic rho, conic radius and curvature continuous are all available choices. Radius of curvature helius composite 2017 autodesk. If you have a 10mm radius and you offset this 9mm the newly created internal radius will be 1mm. As the radius of curvature increases, the curvature value decreases.
Dec 19, 2018 there is a chook within mastercam called sortcircles. The variable radius parameters option allows us to set a profile type for the fillet feature. An advanced breakdown of the solidworks fillet feature tool. The variable radius parameters section allowing us to choose a profile type for the fillet feature. Jul 02, 2012 in this video, alex aprigliano shows how to create a fillet of variable radius along an edge in solidworks. Standard cam types include cylindrical barrel, plate disk and linear. In order to avoid overrefining highly curved small features, the user can specify a minimum mesh density. Focusing on online etraining for engineers using siemens nx software, eric has created numerous online training courses for i get it in both text and video format. So, if you are finding that your shell feature is failing, the first thing to check is the minimum radius of curvature. It looks very similar to the curvature based mesh, including the options of maxmin element size, number of elements around the curve, and aspect ratio.
I would like to find the curvature at a given point on a 3d bspline. If you were to do this in a conventional cad software or heaven forbid drawing board you would have done it completely different. Curvature is defined as the reciprocal of the radius 1 radius, in current model units. I have defined a 3d bspline taken from solidworks where it came from is not relevant in geomdl. Configuration options zygo offers several product options for measuring radius of curvature, including horizontal and vertical configurations, with either manual or automated operation. Greetings everyone, i would like to add what i can only describe as 3d curvature to a surface. Id like to better manage the accuracy of spline curvature but am noticing a problem with my spline behavior.
Examples of this might be the curvature of a lens, the design of a custom spring. Adding 3d curvature to a surface autodesk community. The fillet radius needs to be three millimeters, and it travels the full length from the top inside surfaces. Now when the curvature tool is active, the curvature and radius values display beside the pointer when you point to a model surface or a sketch entity such as a spline or curve. The center radius slider appears only when section type is g1 circular, g2 curvature, or g3 curvature, and specify is set to center radius. Use an existing laminate any laminate stored in the material database can be read and loaded into the laminate tab. However, i can not find out which surface curvature is provided in solidworks. Photoshop is definitely not the best program to use for this. It is an educational software that contains various prebuild simulations and also provides tools to create various simulations. Here are six common and not so common ways to whip them into shape, literally. You can display a part or assembly with the surfaces rendered in different colors according to the local radius of curvature. This comes in handy when the fillet ends in a tight cusp where a very low or zero radius fillet works and other types of fillets fail. Camtrax64 helps the designer create solid models of virtually every type of cam with the required dynamic motion control parameters.
Find minimum radius curvature of surface vba this example shows how to find the minimum radius of curvature for the selected surface. Whether you are new to using cadcam software or a seasoned programmer, youll want to know where these options are and how to use them. Curvature to display color regions based on degrees of curvature. The way i did it or would have done it in sw is start with a rectangle, 2 clicks. Were first going to look at the curvature based mesh control. As the radius of curvature decreases, the curvature value increases, and the corresponding color changes from black 0. In it, you can find all kinds of simulations related to gravity, gas, pulley, arch, planets, iceberg, etc. I bet you did not know this sketch relation existed. Camtrax64 standard cam types include cylindrical cams, plate aka disk cams and linear cams. A planar surface has a curvature value of zero because the radii of flat.
The fillet feature is one of the oldest features in solidworks software. An arc is drawn with the end point of this line as the centre and with the corresponding radius till the arc meets the next circle. Nt cadcam is the uks most established solidworks reseller in england, scotland and wales. Radius of curvature calculations are performed by zygos mx analysis software, included with every interferometer system. As the number of automaker recalls due to software issues are increasing and gaining widespread attention, we are striving to enable the automotive industry with the bestinclass software and guidelines to control and improve the architecture and technical quality of. Most solidworks users are comfortable creating models with the familiar sketch commands lines, rectangles, splines, arcs, etc. The circular option will generate a profile with a circular crosssection.
How to measure the radius of curvatures, rounds and fillets. Radius of curvature radius of curvature in the x, y, and xydirection due to loading. There are three different degrees of curvature that we are concerned with in solidworks. Find smallest inside radius in mastercam, or solidworks sign in to follow this. Camtrax64 helps the designer create solid models of virtually every type of cam with the dynamic motion control parameters your system requires. Complex surface surface with a constantly changing radius. So lets jump over to solidworks and see what happens. Eric worked in manufacturing as an industrial designer and design engineer in the automotive and product industries for 17 years. Using the check tool for minimum radius of curvature. Curvature continuous fillets are the most computationally intensive but result in the highest quality. For example, i can add a 3d curvature to the surface of a circle by creating a 3d sphere with the same radius, and using subtract on half the sphere as shown in the picture below. Not familiar with your software but know for a fact that there can be a significant difference between the shape of radii. You can now read the minimum radius of curvature for the model.
In general, the radius of curvature varies continuously along a curve. Algodoo is a free optics simulation software for windows. For simple curvatures like constant rounds and constant fillets, or regular circular holes, you can just as wel. You can manually measure the radius of curvature by drawing lines that are perpendicular to the curve at many points along the curve.
We can even use our curvature display tool to further analyze our surface. Oct 25, 2017 the suggestion given by john burrill perfect and it can apply to all kinds of curvatures. The following images show some meshes obtained when specifying curvature based refinement. These exceptions occur mostly when using analytic faces. Solidworks introduced the blended curvature based mesh in solidworks 2016. Because curvature evaluation second derivatives can be expensive, the user has control over the amount of sampling.
Evaluate and it will give you the minimum radius of curvature. The green color shows less radius of curvature and blue area shows high radius of curvature. Blended curvature based mesh in solidworks simulation. The radius of curvature is the shortest distance between the sketch and its curvature center. A new addition to solidworks 2015 is the surface curvature combs option. Now when the curvature tool is active, the curvature and radius values display beside the pointer when you point to a model surface or a sketch entity such as a.
How to measure the radius of curvatures, rounds and. Is it gaussian curvature, mean curvature, minimum curvature, or other definition. For question number two of the exam,were asked to create a curvature continuous filletalong this edge right over here. Theyre saying to use a curvature continuous fillet,and they want to know. Curvature is defined as the the first degree is called contact or c0 continuity and is when two entities meet. I believe that i want to use the derivatives of the spline at that point to calculate the curvature at that point but i do not understand how. This option and its related parameters are only visible if construction type is radius for bias and lead section types, choose whether you want to specify the peak radius or the knee ratio for g1 circular, g2 curvature, and g3 curvature section types, choose whether you want to specify the center radius, the tangent offset, or both.
Circular, conic rho, conic radius and curvature continuous. In the dialog box, check the box for minimum radius of curvature and click check. By default, the greatest curvature value displayed is 1. Splines in solidworks, however, have come a long way. Therefore, if you try to create a shell thickness or offset of 11mm it will fail. These are available within the face fillet option continuous curvature and the constant radius fillet conic rho value, try between 0. When i check the model for its minimum radius of curvature, the value is quite small. To view the list of available laminates in the database, click the open button under the. The other parameters remain the same, using settings from the previous exercise.