FEA of Mountain Bike Frame by: Alfred Munoz

1
FEA of Mountain Bike FramebyAlfred Munoz
2
Outline

• Forces from static load (case1)
• Results (disscusion)

3
Forces from static case 1
Material is CU92 aluminum
4
Forces from static case 1 Weight Distribution
70 percent
30 percent
5
Forces from static case 1 (71)
X-comp
Y-comp
TT117343.2 Nmm (Torque at top) TB 101717.336Nm
m
(Torque at bottom)
378.5 N
130.34 N
TB
TT
y
30 percent of 300lb 400.35 N
X
6
Forces from static case 1 (72)
D860mm
y
x
70 percent 300 lbs(1334.5 N) equals 934.15 N
X-comp705.01N Y-comp612.86 N
7
Forces from static case 1
X-comp1269.18 N
Y-comp412.38 N
D203mm
Force from a 300 lb rider (1334.5 N)
y
x
8
Results of FEA
9
Results of FEA
Areas of concern
10
Results of FEA
11
Results of FEA
Less stress in the middle Therefore room for opti
mization of material thickness

12
Results of FEA
Results of frame
13
FEA Results
Area of symetrical stress on the top tube
14
Future work

• Apply FEA with entire frame
• Run more cases with dynamic loading
• Model tubes of frame with varying cross-section
  (thinner in darker blue areas)
  
• Add welding at contacts and add gussets
• Perform corrections to Pro-E model with
• the cross-section removed from the places
  where the tubes intersect
  

15
Questions