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A lightweight design method of protective structure under equivalent static load

A lightweight design and protective structure technology, applied in design optimization/simulation, calculation, special data processing applications, etc., can solve the problems of waste of processing materials, heavy weight of finished products, poor operating experience, etc., to avoid design work, and the weight is appropriate , the effect of reasonable structure layout

Active Publication Date: 2019-01-18
CHINA INST OF BUILDING STANDARD DESIGN & RES
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Problems solved by technology

[0006] The purpose of this invention is to provide a lightweight design method for protective structures under the action of equivalent static loads, to solve the long-term and high-cost technology of existing design methods problems; and solve the problems of waste of processing materials, heavy finished products, and poor operating experience

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  • A lightweight design method of protective structure under equivalent static load
  • A lightweight design method of protective structure under equivalent static load
  • A lightweight design method of protective structure under equivalent static load

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Embodiment Construction

[0060] see figure 1 As shown, the lightweight design method of the protective structure under the equivalent static load, the specific steps are as follows:

[0061] Step 1: Carry out three-dimensional solid modeling of the protective structure according to the actual blockage size of the civil air defense project.

[0062] Step 2: Convert the dynamic load of the explosion shock wave into a uniform static load loaded on the surface of the protective structure: when establishing the finite element model, this standard value needs to be assigned as the boundary condition of the calculation model.

[0063] Step 3, define the optimized mathematical model, perform topology optimization, remove redundant design from the overall structure, and obtain the topology structure: in the iterative calculation process of topology optimization, perform convergence judgment and sensitivity analysis, where sensitivity analysis is the design value pair optimization Partial derivatives of the va...

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Abstract

The invention provides a lightweight design method of a protective structure under the action of an equivalent static load. According to the actual plugging size of civil air defense engineering, thewhole structure of protective equipment is established, the dynamic load of explosion shock wave is transformed into the uniformly distributed static load on the surface of the structure by the equivalent static load method, Mathematical model is established to optimize the topology, and the whole solid structure is designed by differential structure. Finally, according to the requirements of theassembly structure and the theory of size optimization, the purpose of lightweight is achieved. Through the design method of the invention, the design variables can be changed and the optimal solutionof single objective or even multi-objective value under constraint conditions are obtained. It is an excellent method to realize the lightweight of structure in mechanical design. It greatly improvesthe utilization rate of material, lightweight design lightens the weight of equipment, improves the operation performance of equipment and the safety of civil air defense engineering assembly.

Description

technical field [0001] The invention relates to the technical field of protective equipment for civil air defense engineering, in particular to a lightweight design method for a protective structure. Background technique [0002] At present, in order to meet the operational performance required by combat techniques, the mechanical structure of civil air defense engineering protection equipment often uses channel steel and I-beam as the skeleton profile for tailor welding. In terms of meeting the corresponding level of resistance and deformation, the design is redundant and causes processing Waste of materials, heavy equipment weight, and poor operating experience. In addition, traditional product design is extremely dependent on the experience of the designer. Repeated design and modification are inevitable in the product development process. If the design is insufficient in the early stage of development, it will often occur. Insufficient product modification space in the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2111/10G06F30/17G06F30/23Y02T90/00
Inventor 尚文涛卢屹东张瑞龙王淑敬殷卓
Owner CHINA INST OF BUILDING STANDARD DESIGN & RES
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