Flexure Handrail Clamp
grabcad
Figure 1: Clamp installed with mounting adapter attached and secured. - Securing mounting adapter creates tension in flexure and increases clamping force. - Flexure can see 120 lbf of tension due to securing mounting adapter and external loading before start of yield. Figure 2: Clamp in free state, as printed. - Z-axis parallel to handrail length direction. - Flexure curved with parabolic profile in free state. Figure 3: Clamp installed on handrail. - Flexure becomes straight when installed on handrail. - Light clamping force of approximately 1.3 lbf before mounting adapter is attached and secured. Figure 4: Installation steps. Figure 5: Cross-sectional view showing internal construction. - Internal honeycomb construction - lightweight and rigid. - Chamfers between honeycomb walls and clamp side walls to keep maximum overhang at 45 degrees. Figure 6: FEA results for maximum flex during installation. - 2D plane strain nonlinear (large displacement) FEA analysis. - Flexure sees 95% of yield stress during installation. Figure 7: FEA results for clamp installed on handrail. - Flexure sees 48% of yield stress when installed on handrail. - Flexure can see an additional 120 lbf of tension before yield.
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