{"id":283245,"date":"2023-05-10T11:04:57","date_gmt":"2023-05-10T11:04:57","guid":{"rendered":"\/forum\/forums\/topic\/importing-mechanical-loadings-for-x-axis-linear-motor\/"},"modified":"2023-05-10T12:12:05","modified_gmt":"2023-05-10T12:12:05","slug":"importing-mechanical-loadings-for-x-axis-linear-motor","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/importing-mechanical-loadings-for-x-axis-linear-motor\/","title":{"rendered":"Importing mechanical loadings for X-axis linear motor"},"content":{"rendered":"

I am currently doing a thermalmechanical simulation of X-axis of linear motor (consisting of movable parts such as the coil slider, cooling plates and the X-slider). The picture is shown below. Transient structural analysis is used to see the thermal deformations of the linear motor based on the imported temperature data from the transient thermal analysis. <\/p>\n

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All 5 parts are screwed together, so I defined them in Connections with translational joints instead of bonded type manual contacts.<\/p>\n

All parts should move synchrnously together with this given velocity profile in one duty cycle (see below).<\/p>\n

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In the transient structural, I have at first defined the velocities and remote displacements (Y, Z and rotation axes constant zero, while X position\/velocities with some calculated values) and also defined frictionless support between two\/three in-contact surfaces of the adjacent bodies. However, at the end, the linear motor seems to be moving far and far away instead of showing the zig-zag motion (it should because the velocities\/displacments have fluctuating values, see the table\/graph for velocity profile below). Only one value is shown (no maximum and minimum) in the thermal deformation results and result fails to converge.<\/p>\n

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So what I have done instead is putting zero constant for all translational\/rotation axes in remote displacement, suppressing Velocity and then using acceleration with calculated values to define the mechanical inertial loadings (see figure below). I think by doing so is wrong because I am now assuming that the linear motor is static\/fixed in one position and the accelerations become like a force acting on all the bodies of linear motor, resulting in static thermal deformation of a beam.<\/p>\n

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So my question is what should I do to appropriately define the mechanical loadings, so that I can see plausible thermal deformations and see the linear motor moving in quasi zig-zag motion in the results section.<\/p>\n

Are connection settings correct, should I change\/added specific types of connections?<\/p>\n

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