Modelling Linkages with Alternative C&E Simulation Methodologies

Alternative approaches for modelling linkages with several CAE simulation methodologies are discussed. The linkage design methodology is discussed in terms of the unique design features and capabilities that each CAE software package offers. The CAE software packages include: (1) ANSYS - a finite element analysis (FEA) program, (2) Integrated Mechanisms Program (IMP) - a multibody system analysis (MSA) program with its companion program, Geometric Modeling of Solids (GMOS) - a solid object geometric modelling program, (3) QUATTRO - a spreadsheet analysis program, and (4) special user-written analysis/animation programs. The linkage design methodology is discussed in terms of the unique design analysis features and capabilities that each CAE software simulation methodologies offers. Several illustrative modelling/analysis techniques include: (1) ANSYS modelling techniques for the kinematic revolute and prismatic joints, (2) GMOS modelling capabilities for determining the geometric/inertial properties of each kinematic link, (3) IMP design analysis features for computing the motion and force transmission characteristics and animating the relative motion, (4) QUATTRO analysis features for parameter sensitivity analysis and “what-if” studies, and (5) special user-written programs for animating the linkage motion. A dump trailer lift mechanism is used to illustrate the modelling procedures with these four CAE simulation methodologies.