Load transmission path optimization method of multi-point supporting structure

Abstract

The invention provides a load transmission path optimization method of a multi-point supporting structure. The method comprises the steps that firstly, establishing a flexible supporting rigidity model of the multi-point supporting structure; then establishing a rigid support stiffness model of the multi-point support structure; establishing a load transmission path dynamic model of the multi-point support structure; setting vibration overload of the non-bearing structure as an optimization target; setting kinetic parameters and position parameters of the flexible support structure as optimization design variables; establishing a load transmission path optimization design model; obtaining optimal kinetic parameters and position parameters of the flexible support structure through an optimization algorithm; according to the method provided by the invention, the influence of load excitation on the non-bearing structure can be reduced from the source, the shock absorber is not passively adopted for shock resistance, the vibration overload of the non-bearing structure can be remarkably reduced, and the performance requirement on the shock absorber is reduced.

Description

technical field [0001] The invention belongs to the technical field of load transmission path optimization, in particular to a load transmission path optimization method of a multi-point support structure. Background technique [0002] Multi-point support structures are widely used in engineering, such as excavation machinery, crawling robots, machining fixture design, high-precision large-diameter lenses, etc. Usually, such structures are composed of rigid support structures and flexible support structures, such as rigid supports composed of steel structures Combination of flexible support structure and hydraulic structure. As my country's "new infrastructure" plan promotes the informatization and intelligence of engineering and mechanical systems, many information equipment, intelligent equipment, high-end precision instruments, etc. will be added to these systems. The shock and vibration overload of the system is relatively sensitive. If the vibration is not suppressed, i...

AI Technical Summary

Problems solved by technology

[0003] At present, the widely used vibration suppression method is to add damping elements such as shock absorbers to consume vibration energy. However, with the increase in the complexity of the equipment and the increase in the overload requirements of sensitive elements, the performance of the shock absorption equipment is difficult to meet the requirements. , the cost has also risen sharply

In addition, the passive vibration reduction method of adding shock absorbers often leads to new problems due to the addition of new equipment, such as: the increase in the mass of the original mechanical system, the conflict in the structural layout of the original mechanical system, etc.

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