GrabCAD 模型信息
GE Challenge - Charlie Pyott · 模型 308846
ORIGINAL 4.52 lbs. 2051 g 28.27 in3 LATTICE TYPE 1 (early test design) Pyott_Type1Lattice (STEP, SW versions) 0.89 lbs. 408 g 5.62 in3 SOLID TYPE 2 Pyott_Type2Solid (IGES, STEP, SW versions) 0.97 lbs. 439 g 6.05 in3 (%78 improvement) LATTICE TYPE 2 Pyott_Type2Lattice (IGES, STEP, SW versions) 0.85 lbs. 386 g 5.32 in3 (%81 improvement) NOTES ON SIMULATION RESULTS: This design has evolved significantly since I started messing around with possible options mainly due to changes in my simulation setup. Originally the concept was to have most of the bracket sweeping out laterally from the attachment bolts (interface 2-5) to the pin (interface 1) primarily creating a high sheering force on the bolts. I was getting very promising results from this early on but my simulation was “cheating” by setting the through holes and top surface of the counter-bore (areas around interface 2-5) as fixed geometry. This makes the simulation “pull” on the inside of the through holes for interface 2-5 which is incorrect. After revisiting this design using actual 3D geometry as interference objects for the bolts and pin the simulation the results were radically different. I was seeing stress around interface 2-5 go from 90 KSI in the fixed geometry simulation skyrocket up to 300 KSI+ indicating that my original sweeping bracket design would fail around the bolts in real world scenarios. As a result the design evolved to its current point in which the load is distributed more evenly across the bolt heads. However, even with this design I am seeing pretty severe shifting of maximum KSI points depending on the bracket and interface simulation mesh density. With a uniform meshing of the current design I am seeing maximum KSI at 152 for loading condition 1 (8000 lbs. up) but I was able to get this number back down to 111 KSI by applying custom high density mesh conditions around all of the interfaces (although there are still artificial hot spots coming out of the simulation). I thought I would talk about all this in detail just to outline some of the hazards of simulating loads on a part on the bleeding edge of tolerances that I know all of the entries are going through right now. :) NOTES ON THE LATTICE VERSION & THE RULES: I have included two versions of the “Type 2” design. The first is a fully rule compliant solid version and the second is the same design but uses a structural micro lattice to reduce weight in the support arms...
- 格式
- STEP / IGES、SOLIDWORKS、Rendering
- 分类
- Aerospace
- 标签
- generalelectric
- 数据更新
- 2026-10-30T02:38:35Z
