CAJ | 학술논문

基于RAMP（Rational Approximation of Material Properties）插值模型密度法，以结构模态损耗因子倒数最小化为优化目标、阻尼结构体积为约束条件、约束阻尼单元相对密度为设计变量，建立约束阻尼结构拓扑优化模型。基于优化准则法推导设计变量更新准则，结合有限元法编写约束阻尼材料拓扑优化程序，对圆柱壳在振动控制中约束阻尼结构进行拓扑优化分析。结果表明，基于优化准则的振动拓扑优化方法所需迭代次数少，能有效减少结构的振动响应。从而验证设计方法的有效性。
기우RAMP（Rational Approximation of Material Properties）삽치모형밀도법，이결구모태손모인자도수최소화위우화목표、조니결구체적위약속조건、약속조니단원상대밀도위설계변량，건립약속조니결구탁복우화모형。기우우화준칙법추도설계변량경신준칙，결합유한원법편사약속조니재료탁복우화정서，대원주각재진동공제중약속조니결구진행탁복우화분석。결과표명，기우우화준칙적진동탁복우화방법소수질대차수소，능유효감소결구적진동향응。종이험증설계방법적유효성。
Structureswithdampinghaveabetterperformanceinreducingvibration.Basedonthedensityapproach with RAMP interpolation model,a topologic model of constrained damping structure was established with the minimum of reciprocal of modal loss factors as a target function,the volume of damping structure as a constraint condition,and the relative density of constrained damping element as a design variable.The updating criterion of design variable was derived based on an optimal criteria method.And the topologic optimization program was developed based on the finite element method.The topological optimization for constrained damping structure in vibration control of cylindrical shell was carried out.The analysis shows that the topologic optimization method combined with the optimal criteria method needs less number of iterations and can reduce the vibration response of structure effectively,which indicates the validity of the design approach.