conical head bolt

The finite element method program is used to analyze the elastic-plastic strength of cones in one domestic construction.

对网架螺栓球节点中的锥头强度进行了弹塑性有限元分析,得出其应力分布、塑性区分布及极限承载力。

After a comparative study on the morphological characters of 10 grasshopper genera belonging to Chrotogonidae and Pyrgomorphidae,22 characters were used in the cladistcis analysis to illustrate the phylogeny among 10 grasshopper genera of Chrotogonidae and Pyrgomorphidae from China.

通过比较中国分布的瘤锥蝗科Chrotogonidae和锥头蝗科Pyrgomorphidae 10属蝗虫的形态学性状 ,选择了2 2个性状对 10属蝗虫的系统发育关系进行支序系统学分析。

The penetration process of metal targets by a conical projectile is analyzed,based on experimental results on a thin plate when penetrated by a conical projectile at low velocity.

根据低速锥头弹丸对薄板穿孔的实验研究结果，分析了锥头弹丸穿透匀质钢靶板的作用过程，提出了大锥角弹丸穿透薄钢靶板的主要破坏模式为：隆起一剪切破坏和碟形弯曲一花瓣开裂破坏。