Lattice screening and relative strength lattice filling method considering energy absorption rigidity

Abstract

According to the dot matrix screening and relative strength dot matrix filling method considering the energy absorption rigidity, the rigidity and the energy absorption capacity of a dot matrix structure are comprehensively and quantitatively evaluated, different dot matrix types can be selected very visually and accurately, and the dot matrix structure with the best energy absorption capacity andrigidity is screened out; according to the method, the relative strength of the dot matrix is obtained by conducting finite element analysis on the dot matrix structure and the entity to obtain stress distribution information, the relative strength is easy to obtain, the stress distribution of the structure is associated with the dot matrix filling rate, and a guiding standard is provided for filling of the variable-density dot matrix.

Description

technical field [0001] The invention belongs to the technical field of structural lightweight design, and specifically relates to a lattice screening and relative strength lattice filling method considering energy-absorbing stiffness. Background technique [0002] Lightweight is a goal that has been pursued in the aerospace field. Every reduction in the weight of the parts on the aircraft will save the aircraft a lot of fuel consumption and improve the performance of the aircraft. Statistics show that every 1% reduction in aircraft weight can improve aircraft performance by 3%-5%, so weight has become one of the important indicators to measure the advanced nature of aircraft. At present, the ways to achieve lightweight mainly include materials, structural design and structural manufacturing. However, the research on new lightweight materials is often difficult to achieve significant results in a short period of time, and structural design and lightweight manufacturing have...

AI Technical Summary

Problems solved by technology

In order to overcome the shortcomings of long processing cycle and waste of materials when printing dense metal parts, it can be designed to be hollow and filled with dot matrix materials according to the mechanical performance requirements of the parts

However, if the filling rate of the lattice replacement entity is too high, the material utilization will be insufficient and the lightweight effect will be poor; if the filling rate of the lattice replacement entity is too low, the structural strength after filling will be too low, which will affect the normal structure Work

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