Behavior of SMA actuators under nonproportional thermomechanical loading Conference Paper uri icon

abstract

  • The application of SMA actuators in smart structures usually involve thermally induced phase transformation with a variable applied stress in SMA actuators, resulting in thermomechanical non-proportional loading of SMAs in stress-temperature space. To investigate the constitutive response of SMAs under thermomechanical non-proportional loading, experiments for thermally induced phase transformation of binary NiTi SMA wires loaded by an elastic linear spring are performed in the Active Materials Laboratory at Texas A&M University. A constitutive model developed by Bo and Lagoudas (1998a,b,c) and Lagoudas and Bo (1998) is used as the basis for the theoretical prediction of the response of SMA line actuators loaded by springs with different elastic constants. Model predictions are compared with experimental results.

name of conference

  • 5th Annual International Symposium on Smart Structures and Materials

published proceedings

  • Smart Structures and Materials 1998: Mathematics and Control in Smart Structures

author list (cited authors)

  • Bo, Z., Lagoudas, D. C., & Miller, D. A.

editor list (cited editors)

  • Varadan, V. V.

publication date

  • January 1, 1998 11:11 AM

publisher