This paper is concerned with a theoretical and experimental study of the deployment of inflated curved slender beams. A theoretical model for a beam with effects from restoring force and moment on deployment angle is proposed. Assuming slow deployment, a quasi-static viewpoint is utilized to simplify the model which the buckling cross-section is considered. The relation between deployment angle and contact area at the instability bending point is studied for the membrane chamber of a thermally rigidizable inflatable beam. While an inflated beam was constrained as simply-supported and fixed-free at its ends, the relations between the restoring force and moment and the internal pressure and its angle were tested by adding to the mechanical experimental method an infrared thermal imager. Results show that the restoring force and moment are increasing with the pressure at a given angle. Moreover, the restoring moment is nonlinearly related to the deployment angle. The correctness of the theoretical model was verified through experiments.

本文涉及膨胀的弯曲细长梁展开的理论和实验研究。提出了受恢复力和力矩对展开角度影响的梁的理论模型。假设部署缓慢，则使用准静态视点简化考虑屈曲横截面的模型。对可热硬化的充气梁的膜室研究了展开角与不稳定性弯曲点处的接触面积之间的关系。当充气光束在其端部被约束为简单支撑和自由固定时，通过在机械实验方法中添加红外热像仪，测试了恢复力和力矩与内部压力及其角度之间的关系。结果表明，在给定角度下，恢复力和力矩随压力的增加而增加。此外，恢复力矩与展开角度非线性相关。通过实验验证了理论模型的正确性。