CAJ | 학술논문

由多个三角形或梯形平面在空间上以平面与平面间周期性按一定夹角连接所构成的似圆柱壳结构是一种新的结构形式，简称为多平面柱壳。论文将该新型结构用于水下耐压结构，定义了其基本几何参数，并推导了重量、体积和惯性矩等常用特征表达的计算公式；比较了多平面柱壳、环肋圆柱壳以及一般圆柱壳这三种柱壳结构受均布水压时的稳定性，并着重讨论这几种柱壳结构对几何初始缺陷的屈曲敏感性。计算结果表明，在一定重量/浮力比条件下，多平面柱壳的临界失稳压力优于圆柱壳，而与环肋圆柱壳的相当；并且多平面柱壳对于几何初始缺陷的屈曲敏感性小于环肋圆柱壳和一般圆柱壳等常用结构。
유다개삼각형혹제형평면재공간상이평면여평면간주기성안일정협각련접소구성적사원주각결구시일충신적결구형식，간칭위다평면주각。논문장해신형결구용우수하내압결구，정의료기기본궤하삼수，병추도료중량、체적화관성구등상용특정표체적계산공식；비교료다평면주각、배륵원주각이급일반원주각저삼충주각결구수균포수압시적은정성，병착중토론저궤충주각결구대궤하초시결함적굴곡민감성。계산결과표명，재일정중량/부력비조건하，다평면주각적림계실은압력우우원주각，이여배륵원주각적상당；병차다평면주각대우궤하초시결함적굴곡민감성소우배륵원주각화일반원주각등상용결구。
Polyhedrally-stiffened cylindrical (PC) shell is a new kind of structure where pieces of flat triangular or trapezoidal surfaces are folded regularly and results in cylindrical-resemble form. Geometry characteristics like inertial moment volume and mass of PC shell are analyzed; stability of PC shell at external pressure is compared with conventional cylindrical (CC) shell and ring-stiffened cylindrical (RC) shell respectively. Inertial moment analysis indicates that PC shell is an intrinsically stiffened structure form. It is thought that PC shell has better ability in resist buckling and less sensitive to fabrication defect than CC shell and RC shell under certain gravity buoyancy ratio.