Presentation on theme: "Image courtesy of Engineering Center LTD, Russia MA9206-2: Digital Prototyping Mechanical Simulation Overview John Holtz, Peter Maxfield Product Design."— Presentation transcript:
Image courtesy of Engineering Center LTD, Russia MA9206-2: Digital Prototyping Mechanical Simulation Overview John Holtz, Peter Maxfield Product Design
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Analysis Types (partial list) Linear Static Stress Linear Dynamic Stress (modal, response spectrum, random vibration, buckling load, transient stress) Nonlinear Stress (large displacement, nonlinear materials) Thermal (steady state and transient) Electrostatic (current and voltage; field and voltage) Fluid Flow (steady and unsteady; open channel flow) Coupled (combine the effects of fluid flow and thermal in one analysis)
Autodesk Algor Simulation Element Types Line elements Truss (axial only) Beam (axial and bending) Springs Area elements Plate and shell Membrane Composite plate Volume elements 3-D solid 2-D solid (planar and axisymmetric)
Compressor and Motor Base Frequency Response A base structure for a compressor and motor was modeled with a combination of beam and plate elements. A Frequency Response analysis (or sine sweep) was performed to simulate an imbalance in the motor. The stress and deflection of the structure over the range of operating frequencies is the result of the analysis.
Flow Around Dome Unsteady Fluid Flow The air flow around a 31 foot (9.4 meter) diameter dome is revealed by displaying the streamlines. By performing such analyses, the placement of outdoor accoutrements can be chosen to minimize the impact on visitors.
Hyperelastic Bellows Mechanical Event Simulation (MES) with Nonlinear Material Models Mechanical Event Simulation (MES) includes a number of material models which include the effects of nonlinear material behavior. MES was used to analyze a rubber bellows subjected to a longitudinal displacement. The Mooney- Rivlin material properties were derived by curve fitting simple tension, equibiaxial, and pure-shear test data. The two images shows the displaced model and an outline of the undeformed model.
Hyperelastic Bellows Contour shows the radial displacement. Note how the convolutes buckle at this elongation.
Nonlinear Beam Mechanical Event Simulation A rectangular tube, fixed on each end and made from plastic is, loaded to full pressure (at 1.5 sec) and unloaded. The full load causes the material to exceed the yield strength. Thus, the beam retains a permanent deformation when the load is removed.
Pinball Drop Target Mechanical Event Simulation A pinball strikes a target and results in dynamic stresses and deflection.
Heat Exchanger Coupled Fluid Flow and Thermal A heat exchanger with 7 fins and internal, non-pumped fluid. The fluid is heated by a pipe (red part) carrying hot fluid passing through the body of the exchanger. The fluid is cooled by air flowing over the fins. The heating and cooling of the internal fluid causes buoyancy effects which cause the fluid to circulate through the exchanger.
Circuit Breaker Mechanical Event Simulation Three analyses were combined to calculate the performance of a circuit breaker. 1. Electric current passes through based on the resistance of the materials and voltage difference. 2. The current causes heat generation which causes a transient temperature distribution. 3. The differential expansion between the two materials in the bimetallic strip causes it to deform which releases the tripper.
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