Method for building an integrated dynamic model of vehicle-ground coupling
A dynamic model, an integrated technology, applied in the field of establishing an integrated dynamic model of vehicle and ground coupling, which can solve problems such as inability to handle unified processing
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[0037] The present invention will be further described below in conjunction with specific examples.
[0038] The purpose of the present invention is achieved like this:
[0039] 1. Establish an absolute node coordinate system
[0040] Absolute nodal coordinate elements do not use infinitely small rotations or finite rotations as nodal coordinates, but use absolute slopes and displacements at nodes as nodal coordinates. The position vector r of any point on unit j j Can be expressed as a global coordinate system XYZ into r j = S j (x j ,y j ,z j )e j (t), where x in the equation j ,y j , and z j is the spatial coordinate of the unit, S j is the shape function matrix, e j is the element node coordinate vector at time t. Node coordinate vector e jk The expression at node k is:
[0041]
[0042] For a fully parameterized absolute nodal coordinate unit, not only does not exclude the use of elastic mechanics formulas, but also allows the use of generalized continuu...
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