Deployment dynamic analysis of deployable antennas considering thermal effect

Dynamic analysis of flexible multibody systems is complex. Several successful methods have been demonstrated. However, few works discussed the dynamic performance of the flexible multibody under different temperatures. This paper uses the absolute nodal coordinate formulation to analyze the flexible body dynamics of deployment structures under different temperatures to simulate space environments. The dynamic equations of finite element in temperature field are developed. Then a computer-aided simulation of flexible multibody systems in temperature field is implemented. A general four-bar mechanism under different temperatures as a simulation example is demonstrated, and the deployment characteristics of a special four-bar mechanism as a basic module of the hoop truss deployable antenna is analyzed under different temperatures in order to evaluate the dynamic performance of the deployable antenna in space environments. The simulation results indicate the influence factors of deployment dynamic characteristics include the structural form, material properties, geometric parameters and deployment planning in ambient and thermal/vacuum environments.

[1]  Jean-Claude Samin,et al.  Comparison of Various Techniques for Modelling Flexible Beams in Multibody Dynamics , 1997 .

[2]  Jong-Dar Yau,et al.  Stability of tapered I-Beams under torsional moments , 2006 .

[3]  A. Shabana.  Computer Implementation of the Absolute Nodal Coordinate Formulation for Flexible Multibody Dynamics , 1998 .

[4]  A. Shabana,et al.  Definition of the Elastic Forces in the Finite-Element Absolute Nodal Coordinate Formulation and the Floating Frame of Reference Formulation , 2001 .

[5]  Ji-Hwan Kim,et al.  Deployment of a multi-link flexible structure , 2006 .

[6]  Francisco Armero,et al.  Numerical modeling of softening hinges in thin Euler-Bernoulli beams , 2006 .

[7]  R. E. Freeland,et al.  In-step Inflatable Antenna Experiment , 1992 .

[8]  Gunnar Tibert,et al.  Deployable Tensegrity Structures for Space Applications , 2002 .

[9]  Zhong You,et al.  Deployable mesh reflector. , 1994 .

[10]  J. Hedgepeth.  Structures for remotely deployable precision antennas , 1989 .

[11]  Hong,et al.  Nonlinear Absolute Nodal Coordinate Formulation of a Flexible Beam Considering Shear Effect , 2005 .

[12]  I. Sharf.  Nonlinear Strain Measures, Shape Functions and Beam Elements for Dynamics of Flexible Beams , 1999 .

[13]  Simon D. Guest,et al.  A new concept for solid surface deployable antennas , 1996 .

[14]  Y. Khulief.  Dynamic Response Calculation of Spatial Elastic Multibody Systems with High-Frequency Excitation , 2001 .

[15]  G. R. Heppler,et al.  A Deformation Field for Euler–Bernoulli Beams with Applications to Flexible Multibody Dynamics , 2001 .

[16]  Francesco Ubertini,et al.  A mixed variational method for linear coupled thermoelastic analysis , 2001 .