RESPONSE OF COMPOSITE BEAMS TO AN INTERNAL ACTUATOR FORCE

被引：15

作者：

CHAUDHRY, Z

ROGERS, CA

机构：

[1] Center tor Intelligent Material Systems and Structures, Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA

来源：

JOURNAL OF MECHANICAL DESIGN | 1992年 / 114卷 / 03期

关键词：

D O I：

10.1115/1.2926559

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Shape memory alloy hybrid composite materials have demonstrated numerous control capabilities. One such capability is the controlled bending of structures. In this paper the response of a cantilevered beam to an internal actuator is examined. The modeling of the compressive force exerted by the induced strain of the actuator on the beam is discussed. The results obtained from treating the force as an external follower force are presented. The response to an internal force such as exerted by an internal shape memory alloy actuator is quite different from that produced by loads due to sources external to the beam. Contrary to normal expectations such an internal force although compressive does not produce any buckling tendencies or any other instabilities in the beam. This principle which is already in use in the design of civil engineering structures is discussed in detail. If the actuators are embedded off of the neutral axis, then due to the eccentricity the beam bends, but again without any buckling tendency. The experimental results obtained for this configuration are also presented.

引用

页码：343 / 348

页数：6

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