Object balance simulation - Scan-and-Solve for Rhino2024-03-29T14:26:39Zhttp://www.scan-and-solve.com/forum/topics/object-balance-simulation?feed=yes&xn_auth=noHello Michele,
In terms of ba…tag:www.scan-and-solve.com,2018-01-16:6083097:Comment:524122018-01-16T16:27:25.336ZMichael Freytaghttp://www.scan-and-solve.com/profile/MichaelFreytag
<p>Hello Michele,</p>
<p>In terms of balance, can you just ensure the center of gravity of the person/chair combination falls within the footprint of the feet?</p>
<p>As far a simulation goes, your chair needs to be restrained somewhere in X, Y, and Z. Here's a possible option:…<a href="http://storage.ning.com/topology/rest/1.0/file/get/2506643769?profile=original" target="_self"></a></p>
<p></p>
<p>Hello Michele,</p>
<p>In terms of balance, can you just ensure the center of gravity of the person/chair combination falls within the footprint of the feet?</p>
<p>As far a simulation goes, your chair needs to be restrained somewhere in X, Y, and Z. Here's a possible option:<a href="http://storage.ning.com/topology/rest/1.0/file/get/2506643769?profile=original" target="_self"></a></p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2506643769?profile=original" target="_self"><img width="721" src="http://storage.ning.com/topology/rest/1.0/file/get/2506643769?profile=RESIZE_1024x1024" width="721" class="align-full"/></a></p>
<p>As you can see, one of the rear legs is restrained in all directions, and the others are restrained in Z only. This roughly* simulates the legs being free to slide on the floor.</p>
<p>To determine if the weight distribution wants to lift any legs off the ground, look at Stress-ZZ near the ends of the legs. If Stress-ZZ is largely positive around the area of a foot, then the restraint of the floor is probably tending to keep that foot on the floor. Since this is unrealistic, you could try re-running the simulation with these feet unrestrained.</p>
<p> Does this help?</p>
<p>~Michael</p>
<p>* NOTE: Restraining the bottom face of the legs will prevent rotation of the foot, this will likely induce bending stresses near the bottom of the leg that would not be present in real life. Allowing some rotation requires extra insight that we can help you with if you're interested.</p>