The interactive effects on deformation behavior in laser thermal adjustment of two-bridge actuators

•The deformations of the two-bridge actuator are induced under heating two bridges.•The stress distribution and displacement development are analyzed.•The interactive effects of heating two bridges are conducted.

Laser thermal adjustment of two-bridge actuators by heating one bridge attracts much attention. However, the interactive influence of heating two bridges on the in-plane and out-of-plane deformations of actuators has not been explored. In this study, a 3D thermo-mechanical analysis is conducted to study the laser thermal adjustment of actuators under heating two bridges. The effects of the time gap between the heating two bridges on temperature, stress distribution and deformation behavior are investigated. The results show that there are some interactions between stress and temperature in the two heating bridges, which can significantly affect the deformations of actuators. To validate the present numerical model experimental work is also performed and reported in the paper.