Stacked regulators finite element analysis
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The document discusses a request from a small startup client to analyze a voltage regulator design using FEA simulation to determine if it can withstand a 10g load in 3 axes. The simulation found the rubber bushings may tear under repeated loading in the y-axis but the aluminum spacers are below their yield strength in the x and z-axes. Vibration mode analysis identified the first few modes of vibration.
Stacked regulators finite element analysis
- 1. Prototype Ruggedization Solidworks FEA Simulation Quick turn around analysis 10/8/2016 Don Blanchet 3B Associates dwb3298@verizon.net
- 2. Client request (very small start-up) We have a voltage regulator brass board design. Will it withstand a 10 g load in 3 axes ? Don asks : what is the nature of the 10g load? shock? Vibration? Just a 10g load Hey can you do the stress calculations or not ? We need a fast answer.
- 3. Model Stacked power regulators With rubber isolation bushings 16 places 1.2 x 2.6 x 3.6 inches Weight = 0.36 lbs
- 4. Model FEA mesh 650,000 degrees of freedom Held at base only
- 5. Customer request 10g static load y-axis Probable rubber Bushing tearing On repeated loading Stress = 2173 psi
- 6. Customer request 10g static load x and z axes Bending stress In aluminum Spacer is well below the yield strength Ok for ZX loading
- 7. Vibration Modes from FEA Eigenvalues