本文選題：頻響函數(shù)　切入點(diǎn)：子結(jié)構(gòu)　出處：《計(jì)算力學(xué)學(xué)報(bào)》2017年02期

【摘要】：在復(fù)雜工程結(jié)構(gòu)頻響子結(jié)構(gòu)分析中,各個(gè)子結(jié)構(gòu)的頻響函數(shù)往往是由不同的部門獲得,各個(gè)子結(jié)構(gòu)的頻響函數(shù)可能是在不同的坐標(biāo)系下得到,亦或有些子結(jié)構(gòu)具有某種對稱性,這需要對相應(yīng)的子結(jié)構(gòu)頻響函數(shù)進(jìn)行旋轉(zhuǎn)和鏡像變換后才能進(jìn)行整體拼接。此外,子結(jié)構(gòu)拼接時(shí)交界面的連接點(diǎn)有時(shí)可能存在不一致,為了滿足位移協(xié)調(diào)和力平衡條件,本文基于界面主從位移控制原理,提出一種改進(jìn)的頻響子結(jié)構(gòu)方法,該方法既能考慮子結(jié)構(gòu)的旋轉(zhuǎn)和鏡像變換,也能考慮子結(jié)構(gòu)界面間的柔性連接,并可大幅提高計(jì)算效率。當(dāng)界面位移控制陣為單位陣時(shí),改進(jìn)的方法退化為傳統(tǒng)的頻響子結(jié)構(gòu)方法。數(shù)值算例驗(yàn)證了所提方法的正確性和有效性。
[Abstract]:In the frequency response substructure analysis of complex engineering structures, the frequency response function of each substructure is often obtained by different departments. The frequency response function of each substructure may be obtained in different coordinate systems, or some substructures may have some symmetry.This requires rotation and image transformation of the corresponding substructure frequency response function before it can be stitched as a whole.In addition, the joint points of the interface may sometimes be inconsistent. In order to meet the conditions of displacement coordination and force balance, an improved frequency response substructure method based on the principle of interface master-slave displacement control is proposed in this paper.This method can not only consider the rotation and image transformation of substructure, but also consider the flexible connection between substructure interfaces, and greatly improve the computational efficiency.When the interfacial displacement control matrix is a unit matrix, the improved method is reduced to the traditional frequency response substructure method.Numerical examples show that the proposed method is correct and effective.
【作者單位】： 大連理工大學(xué)工業(yè)裝備結(jié)構(gòu)分析國家重點(diǎn)實(shí)驗(yàn)室工程力學(xué)系;
【基金】：國家重點(diǎn)研發(fā)計(jì)劃(2016YFB0200702) 國家自然科學(xué)基金(11232003,91515103) 111引智計(jì)劃(B14013) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(DUT15JJ(G)03)資助項(xiàng)目
【分類號】：TB11

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