1) Deformation of the thin-wall parts
薄壁变形
2) thin-walled tube with polygonal section
多变形截面薄壁管
3) thin_walled box column with variable cross_section
变截面箱形薄壁立柱
1.
For a thin_walled box column with variable cross_section, the three governing equations for torsional_flexural buckling are ordinary differential equations of the second or fourth order with variable coefficients, so it is very difficult to solve them by means of an analytic method.
变截面箱形薄壁立柱弯扭屈曲的三个控制方程是二阶或四阶变系数的常微分方程，很难用解析的方法求解·本文用多项式来近似截面的几何特性和微分方程的某些系数，用能量原理和伽辽金法分别导出了计算这种立柱弯曲和扭转屈曲荷载的近似公式，用数值算例来验证了所给解答的正确性·本文的计算结果为论证变截面箱形薄壁立柱的稳定性提供了依据·本文具有实用价值
4) thin-walled rectangular tube
薄壁矩形管
1.
3-D FEM analysis of section distortion in bending process of the thin-walled rectangular tube;
薄壁矩形管弯曲过程截面畸变的三维有限元分析
2.
A three-dimensional FEM model of rotary draw bending of thin-walled rectangular tube is built under the ABAQUS/Explicit environment.
基于动态显式有限元平台ABAQUS/Explicit,建立了3A21铝合金薄壁矩形管绕弯成形过程的三维有限元模型,模拟分析了芯棒伸出量对薄壁矩形管绕弯成形过程中失稳起皱的影响规律。
3.
Based on the platform of ABAQUS/Explicit,a 3D-FE model of rotary draw bending process of 3A21 aluminum alloy thin-walled rectangular tube was established,and its reliability was validated.
基于ABAQUS/Explicit,建立了铝合金薄壁矩形管绕弯成形过程三维有限元模型,并对其可靠性进行了验证。
5) thin shell die cast
薄壁壳形件
1.
By means of evacuating directly from the cavity of die can solve many problems in magnesium alloy thin shell die cast formation,such as long flow path and difficult to fill.
利用模内直接抽真空的方法可以解决镁合金薄壁壳形件流程长、填充型腔困难的问题,同时可减少镁合金的氧化和内部气孔、提高压铸件致密度、减小变形和达到高的表面质量要求。
6) forming thin-walled tube
薄壁管成形
补充资料：管勾
中国宋、金、元时期职官名，多掌各级架阁库的档案典藏。管勾原为办理之意，宋代始以管勾为官职。御史台有管勾台事。金、元时期中央和地方各职司多置管勾。京内尚书省、中书省、枢密院、御史台及各府、院、司、监，京外行中书省、廉防司、宣慰司以及河桥、盐场、关隘、 各道皆设此职。 大都掌文卷簿籍架阁之事。中央机关架阁库设管勾1～2名，地方机关视职司大小而定，有专司庋藏架阁，有兼理承发宰辅文书，一般设管勾1名。金、元时期管勾一职,品秩为八品或九品。清代唯孔庙有此官，掌祀田钱谷之出入。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条