江汉大学学报(自然科学版)
江漢大學學報(自然科學版)
강한대학학보(자연과학판)
JOURNAL OF JIANGHAN UNIVERSITY(NATURAL SCIENCES)
2014年
4期
30-34
,共5页
支承系统%势能%位移%最小势能原理%叠加原理
支承繫統%勢能%位移%最小勢能原理%疊加原理
지승계통%세능%위이%최소세능원리%첩가원리
supporting system%potential energy%displacement%principle of minimum potential energy%superposition principle
利用弹性力学中的叠加原理和等效原理,将支撑系统看作一个整体来研究,基于弹性力学中的能量守恒原理,以约束力为桥梁,假定各个约束力是依次作用于支撑系统,借助多个位移的叠加,推导出了支承系统的势能泛函公式,并利用最小势能原理,给出了求解支承系统问题的一种新算法。该算法简便、准确,能够较为广泛地应用于各类工程计算。
利用彈性力學中的疊加原理和等效原理,將支撐繫統看作一箇整體來研究,基于彈性力學中的能量守恆原理,以約束力為橋樑,假定各箇約束力是依次作用于支撐繫統,藉助多箇位移的疊加,推導齣瞭支承繫統的勢能汎函公式,併利用最小勢能原理,給齣瞭求解支承繫統問題的一種新算法。該算法簡便、準確,能夠較為廣汎地應用于各類工程計算。
이용탄성역학중적첩가원리화등효원리,장지탱계통간작일개정체래연구,기우탄성역학중적능량수항원리,이약속력위교량,가정각개약속력시의차작용우지탱계통,차조다개위이적첩가,추도출료지승계통적세능범함공식,병이용최소세능원리,급출료구해지승계통문제적일충신산법。해산법간편、준학,능구교위엄범지응용우각류공정계산。
Using the superposition principle and equivalence principle of elastic mechanics,take the supporting system as a whole to study it,based on the priciple of energy conservation of elastic mechanics,the potential energy functions for the supporting system are derived by applying the theo-rem of superposition for multiple displacements under the assumption that every internal force is act-ing on the supporting system in turns. A new algorithm for the supporting system is also obtained by using the principle of minimum potential energy. This algorithm is simple,accurate ,and can be widely used in various types of engineering calculations.