![]() If you have any other tips and tricks for the Mass Properties tool let us know in the comment section! For more information on SOLIDWORKS or if you have any questions, contact us at Hawk Ridge Systems today. A convenient Center of Mass feature can even be created via a simple checkbox in the dialog. SOLIDWORKS gives us the convenience of changing units in the window without affecting the part’s default unit system. ![]() Using Mass Properties has helped us determine the mass, density, volume, surface area and center of mass coordinates from one convenient window. Now all the Mass Properties have been updated for the small cylindrical boss. strength, stiffness, elasticity Loading stiffness: transverse, axial, buckling Second Area Moment of Inertia - I Force and Torque, or Stress and Moments. For example, we can select the small cylindrical boss after clearing the part from the box and click Recalculate. Since the socket is composed of multiple bodies, it is possible to select each one individually inside the selection box that is highlighted blue and have its mass properties shown. It should be noted that while this center of mass feature can be used to create reference dimensions, it cannot be used to create driving dimensions. We can check on the box next to Create Center of Mass feature, resulting in a visual reference for the center of mass in the part environment even after the window is closed. We got all the information we needed about the center of mass, but we still need some sort of visual representation of it. The mass moment of inertia coordinates updates instantly, and we can always go back to the original coordinate system by clicking on the drop-down box and selecting default. We can use a reference coordinate system if desired (rather than the default origin) by clicking on the drop down box shown in the picture below: Here the free polar moment of inertia calculator also shows the same results but in a very short span of seconds, saving your precious time. The socket’s center of mass is visible on the part, and we can see both the coordinates of the center of mass as well as moments of inertia in the window. After clicking OK the units are updated in the dialog, as seen in the picture below: The unit precision can be changed to up to eight places, but we will leave ours at one. Within the Options window, select “Use custom settings” and choose the desired units for length, mass and volume. If our customer needs to see the mass of the part in kilograms, for example, we can change the units shown in the Mass Properties window by clicking on Options. In this example, our socket is in English units. ![]() The same process can be used when trying to see how much each individual parts mass properties are in the context of an assembly. Now if the file consists of multi-bodies, each body can be selected to see its individual mass properties. Once clicked on, the Mass Properties dialog shows us the mass, volume, coordinates of the center of mass, and a visual location of the center of mass in the form of a pink triad. In order to use this tool, we must be in a part or assembly environment. To access the Mass Properties tool, click on the Evaluate tab in the CommandManager. Want to learn how to assign materials to parts and even create your own materials? Check out this video on SOLIDWORKS custom material library. While the Mass Properties dialog will always report a value for mass, it may be inaccurate if any parts or bodies do not have the proper materials assigned. Select an Axis (X or Y local axis) to determine the value in the Moment of inertia or Section modulus box (see Figure 13.23). Before we begin, it’s critically important that your parts (or all components, in the case of an assembly) have material(s) assigned to them. Luckily, the simple and convenient Mass Properties dialog provides all these values, and more. If an accurate value for mass is needed, how can that be achieved? What about coordinates for center of mass, or design volume? Assigning Mass Properties Draw a sketch of the section and use the ribbon function Inspect > Measure > Region to display the "Region Properties" windows.Creating a part to be as realistic as possible allows us to make accurate models in SOLIDWORKS. The section area, modulus (W), moments of inertia (second moment of area), torsional rigidity (J k) or shear displacement can be found in a table:Īnother place where you can examine moments of inertia of arbitrary shapes is the Measure region tool in the Inventor sketch environment. ![]() In the assembly environment, click in the ribbon on Design > Frame > Beam/Column calculator (under the arrow) and in the calculation dialog choose an object or a profile shape. You can calculate the quadratic moment of inertia of a section - J x and J y - with the Beam calculator in Inventor. Quadratic moment of inertia of an Inventor part. ![]()
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