CAJ | 학술논문

针对热载荷作用下蜂窝夹层板固有频率变化的问题，分析了蜂窝夹层板在热载荷作用下的应力分布及固有频率，并根据应力分布预测了夹层板的固有频率变化，与仿真得到的频率变化一致。仿真结果表明：碳纤维蒙皮蜂窝夹层板在热载荷作用下的固有频率基本不变，且约束形式对频率变化的影响很小；铝合金蒙皮蜂窝夹层板在热载荷作用下时，约束形式对频率变化影响很大，当约束较少时频率基本保持不变，当约束较多时将引起结构固有频率大幅下降。
침대열재하작용하봉와협층판고유빈솔변화적문제，분석료봉와협층판재열재하작용하적응력분포급고유빈솔，병근거응력분포예측료협층판적고유빈솔변화，여방진득도적빈솔변화일치。방진결과표명：탄섬유몽피봉와협층판재열재하작용하적고유빈솔기본불변，차약속형식대빈솔변화적영향흔소；려합금몽피봉와협층판재열재하작용하시，약속형식대빈솔변화영향흔대，당약속교소시빈솔기본보지불변，당약속교다시장인기결구고유빈솔대폭하강。
The stress distribution and natural frequency changing of honeycomb sand wich plate is proposed in this paper with thermal load,and the natural frequency of honeycombs and wich plate is predicted according to the stress distribution.The simulation results show that the natural frequency of honeycombs and wich plate with carbon fiber skin is essentially the same with thermal load,and the constraint effect to the frequency change is very small.The frequency of honeycombs and wich plate with aluminum alloy skin with thermal load changes greatly when constraint form changes,and the frequency is essentially the same with a small amount of constraint,and the major constraint will cause the frequency decreasing dramatically.