breaking of body with even a lower load in Flexible body simulation using Reduced order flexible solid

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SushmanthSai Gudimallam
回答： Ahmed Aboubakr 2022-8-5
I am facing the error in modelling a leaf spring in Simscape Multibody using reduced order flexible solid. I imported a CAD model of the leaf and followed the steps provided in "Flexible dipper arm example" and "reduced order Model creation". I gave properties to the leaf of that of steel.
E = 2.00016909e11; % Young's modulus in Pa
nu = 0.3; % Poisson's ratio (nondimensional)
rho = 7861.0929; % Mass density in kg/m^3
In the simulation the part is breaking for enev small sinsoidal force input with max amplitude of 2000 N applied at centre vertically downards (-Y Direction). I attached a video of the error. Please help me out. The complete leaf spring is modelled as a single body only. Please help me if there any other way to incorporate flexible leaf spring into my assembly in simscape multibody.
[for running the code first run the Reduced order model generation code, which loads required variables in MATLAB worspace. Then run the simscape file.)

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回答（1 个）

Ahmed Aboubakr
Ahmed Aboubakr 2022-8-5
Hi SushmanthSai
Thank you for sharing the Simulink model with all the required data to run it; I could reproduce the deformed shape you shared in the attached video. In the meantime, I want to confirm that the separation(breaking)issue shown in the deformed body visualization is only a visualization limitation, not an error in modeling the Reduced Order Flexible Solid(ROFS) block. The visualization of the ROFS splits the body into rigid partitions attached to the frames; for more information, see the "Graphic" section on the ROFS block documentation page. Adding more frames for this model can improve its deformed shape visualization.
I hope my answer clarifies the issue you have.
Thank you!
Ahmed

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