CAJ | 학술논문

建立了开洞和未开洞两种安全壳模型，利用ANSYS／LS－DYNA软件对两种安全壳进行了模态分析和时程分析，研究了给定位置和尺寸的孔洞对安全壳抗震性能的影响。结果表明：孔洞对安全壳前16阶自振频率影响较小；两种安全壳在不同高度处的相对位移峰值相近，最大第一主应力值和最小第三主应力值均相差较小。相比未开洞安全壳，开洞安全壳会在洞口附近形成较大的应力集中，在给定的地震荷载作用下，安全壳始终处于弹性阶段。
건립료개동화미개동량충안전각모형，이용ANSYS／LS－DYNA연건대량충안전각진행료모태분석화시정분석，연구료급정위치화척촌적공동대안전각항진성능적영향。결과표명：공동대안전각전16계자진빈솔영향교소；량충안전각재불동고도처적상대위이봉치상근，최대제일주응력치화최소제삼주응력치균상차교소。상비미개동안전각，개동안전각회재동구부근형성교대적응력집중，재급정적지진하재작용하，안전각시종처우탄성계단。
This article firstly created two models of the containment with an orifice and another without one, and secondly performed the model analysis and time history analysis using the ANSYS/LS-DYNA soft-ware .Then the influence of the orifice with given size and location on the seismic performance of the containment was investigated.The results of the analysis showed that the orifice had a little effect on the natural frequencies for the two containments'first 16 order models.The values of the peak relative displacement of different heights for the two containments were very close, and the difference of first principal stress and third principal stress be-tween the two containments was small.A large stress concentration was happened in the containment with an ori-fice.The containments were in elastic stage by using time-history analysis under the given seismic loads.