虛功原理證明采用不同基本結(jié)構(gòu)的力法

劉宇曉

摘要：本文以兩次超靜定結(jié)構(gòu)為例，用虛功原理建立了擁有3個基本結(jié)構(gòu)的力法，并給出這種新力法的正則方程。以此推廣至n次超靜定結(jié)構(gòu)。

關(guān)鍵詞：基本結(jié)構(gòu)；力法；虛功原理；疊加原理

Abstract Taking two degree of indeterminate structures as example，this paper uses the principle of virtual work to derive the force method，including three primary structure .The canonical equations are also provided to this new force method， to spread it to n degrees of indeterminate structures.

Key words primary structure；force method；the principle of virtual work；superposition formula