Reliability Topology Optimization on Spindle Box of Deep Hole Drilling Machine Based on Variable Density Method
Focusing on spindle box of TBT-ML500 deep-hole drilling machine,considering the influence of stochastic factors,the structural lightweight design considering the reliability and stability requirements was performed by using the reliability topology optimi-zation design method based on the variable density method.The probability constraint was added to the traditional topology optimization model under the stress and displacement constraints;the reliability topology optimization problem was decoupled into the reliability anal-ysis and deterministic topology optimization by the first-order reliability method and the Roenblatt inverse transformation.Finally,the variable density topology optimization was performed.The example analysis results show that this method better meets the safety require-ments in the practical application while realizing the lightweight,and also provides a reference for the reliability topology optimization of other basic parts of the deep hole drill bed.
deep-hole drilling machinevariable density methodfirst-order reliability methodtopology optimization
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