shell n. (pl. shells,2 义为 shell) 1.壳;介壳;甲壳;贝。 2.(昆虫的)翅鞘;蛹的蜕皮。 3.【解剖学】种子的外皮;荚。 4.【地质学;地理学】地壳;薄硬岩层。 5.【解剖学】外耳。 6.【机械工程】(汽)锅身。 7.【建筑】薄壳(屋顶);房屋的框架;内部未竣工的建筑物。 8.船体;骨架。 9.子弹壳;炮弹;猎枪子弹;爆破筒。 10.(滑车等的)外框;内棺。 11.外观;外表;外形。 12.单人赛用艇。 13.〔英国〕(学校的)中级班〔四、五年级〕。 14.〔诗〕竖琴;七弦琴。 15.=shell jacket. 16.【物理学】(原子的)电子壳层。 17.(刀剑的)护手。 18.(像钻进壳中似的)沉默;冷淡。 19. 【计算机】操作系统外壳,命令解释程序〔如DOS等〕。 the shell of an egg [a walnut] 蛋[胡桃]壳。 Beetles have shells. 甲虫有硬壳。 an illuminating shell 照明弹。 a tear shell 催泪弹。 the shell of a pipe 管壁。 You're scarcely out of the shell yet. 你还乳臭未干。 cast the shell 脱壳;蜕皮。 come out of one's shell 不再羞怯沉默。 go [retire] into one's shell 缄默起来;害羞起来;对人持冷淡态度;保持距离。 in the shell 在萌芽[潜伏]时期。 vt. 1.由壳中剥出(豌豆等);〔美国〕剥(玉米);给…脱粒。 2.用壳体包被;用介壳铺(路)。 3.轰击;炮击[轰]。 4.〔棒球俚〕(投手)使(对方)获得多次安全打或得分。 shell oysters 去牡蛎壳。 vi. 1.脱壳;蜕壳;(金属等)剥落;(果实等)脱落。 2.炮击。 3.采集贝壳。 as easy as shelling peas 〔口语〕非常容易。 shell out 〔俚语〕交出;付出;付款,捐献 (S- out your money! 拿出钱来!)。
Compared with the results of the ordinary shell structure , the ribbed shell structure can improve the structural bearing capacity , so the theory of the stretching finite element analysis about statics has been extended successfully and also applied to calculation of stretching dynamics . the result indicates that the mechanics impact is of much distinctness compared with ordinary one 成功的将静力学中的弹塑性有限元理论扩展并应用于复合壳体的弹塑性动力学计算中,结果表明利用弹塑性理论计算出的结果更精确,与普通混凝土壳体的比较后可以看出,复合壳体的力学效果非常明显。
This paper focuses on the research of the stress mechanism of the ribbed shell structure in statics , dynamics and under the explosive load on the basis of the engineering practice of cave depot of single aircraft . in this paper , according to the classical shell theories , the basic differential equilibrium of the ribbed shell structure and the finite element analysis of 3d rippled plate are established , in which the function of annular ribs reinforcement bars and 3d ripped steel plates are distributed in the range of the steel , and the functions along the longitude direction of tension , bending , and torsion are neglected ; applied with dynamic analytical theory , the dynamic model of ribbed shell structure and the analytical theory model of elastic - plastic are set up ; the triangle series method is used to solve the displacement and stress under the distributed load and the concentrated load of the ribbed shell structure 本文以军用机场地面单机掩蔽库工程建设为工程背景,首次对内衬三维波纹钢板混凝土拱型复合结构的受力机理进行了静力、动力和爆炸荷载的分析研究。根据将横肋、钢筋及三维波纹钢板的作用均匀分布在壳体范围内的情况,忽略横肋、钢筋及三维波纹钢板沿壳体母线方向的抗拉、抗弯及其抗扭作用,首次推导出了内衬三维波纹钢板混凝土壳体的微分平衡方程,建立了有限元计算模型,并采用三角函数法,求解了三维波纹钢板混凝土拱型复合结构在分布荷载和集中荷载作用下的位移响应和应力响应,并与普通壳体进行了比较。
In this paper at last . the localized anti - collapsing effect of the cave depot of single aircraft under the explosive load is calculated and analyzed . the explosive result shows that 3d ripped steel plate and ribbed shell structure are effective to raise the capacity of anti - collapsing of the protective structures 对飞机单机掩蔽库工程在爆炸荷载作用下,抗局部震塌效应进行了计算分析,模拟直接命中的爆炸试验结果表明:钢筋混凝土内衬三维波纹钢板组成拱型复合结构,是提高防护结构抗震塌破坏的一种十分有效的措施。
It also analyzed the whole stress of the ribbed shell structure under the explosive load . the analytic result keeps well with that of the dynamic response of 6 . 8kg tnt . it shows that this analytic method in this paper is feasible for the design and inspection of cave depot of single aircraft 通过理论计算与6 . 8kgtnt装药爆炸时的动力响应实测比较,两者数值吻合很好,表明本文计算分析方法是可行的。为钢板-混凝土拱型复合结构的设计与检验提供了理论基础,为飞机单机掩蔽库工程的设计检验提供了一条可行的计算分析方法。