This software supports tire finite element model development.
Overview
Road noise is a highly complex phenomenon. As the tire passes over road unevenness, the tire vibrates and that vibration is transmitted to the suspension and body, generating cabin interior noise.
To accurately predict this phenomenon with CAE, it is important to model the input characteristics from the tire and the road surface, which are the sources of excitation.
ESTECH.ESTire is software that supports development of tire finite-element models and road-input models. By incorporating the models created with this software into a vehicle model, road noise can be quantitatively evaluated with CAE.
Tire model overview
ESTECH.ESTire is software that supports developing tire finite-element models and modeling input characteristics from the road surface.
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The base model is for Abaqus, and it can also be converted to Nastran data for use as needed.
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By representing the rubber matrix as a linear viscoelastic material, it can express the static-to-dynamic ratio in addition to the damping behavior of the rubber.
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Reinforcement is represented by rebar elements.
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Accuracy is ensured by tuning the Young’s modulus of the rubber matrix and the properties of the reinforcement using optimization software so that vibration test results are reproduced.
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Applicable to both Abaqus implicit and explicit solvers.
About conversion to a Nastran model
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Translated to Nastran by converting the Abaqus model matrices into Nastran DMIG format.
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Characteristics during tire rolling (gyro effect, Doppler effect) can also be considered.
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It can also be used after modal reduction with ESTECH.NAST+.