Equivalent dead load acquisition method, topological optimization method and system

Abstract

The invention discloses an equivalent static load acquisition method and a topological optimization method and system, and the method comprises the steps: building a topological entity model according to engineering practice, and applying a moving load and a self-weight load to the entity model to obtain a topological finite element model; solving a displacement field of the topology under the action of a moving load according to the finite element model; and constructing a correlation equation between the equivalent static load and a displacement field generated by the equivalent static load, substituting the displacement field of the topology under the action of the moving load into the correlation equation based on the principle that the displacement field generated by the equivalent static load at each moment is the same as the displacement field generated by the moving load at the same moment, and solving the equivalent static load of the topology. Compared with the prior art, the method has the advantages that the dynamic effect of the moving load on the topology is fully considered, the calculated equivalent static load can accurately reflect the topology stress condition under the action of applying the moving load, and then the optimization effect of the method for topology optimization by using the equivalent static load is better.

Description

technical field [0001] The invention relates to the technical field of structural design and optimization, in particular to an equivalent static load acquisition method, a topology optimization method and a system. Background technique [0002] In topological structure design, for the convenience of calculation, the equivalent uniform load is generally used to replace the discontinuous distribution of the actual load on the topology. The existing equivalent load acquisition method generally derives the prestress equivalent The calculation formula and method of the load, however, this method does not consider the force of the topological structure under the action of moving load, resulting in the calculated equivalent static load cannot accurately reflect the force of the topology under the action of moving load, which in turn affects The optimization effect of the topology optimization method using this equivalent static load. [0003] Therefore, how to solve the problem th...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an equivalent static load acquisition method, a topology optimization method and a system, which are used to solve the problem that the existing equivalent static load acquisition method does not consider the stress of the topology structure under the action of the moving load, resulting in the calculated equivalent static load. The load does not accurately reflect the technical problem of the topological force under the action of the applied moving load

Images