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Due to technical issues with manufacturing the bottom panel, it was no longer possible to manufacture a structural bottom panel. To accommodate for this change in design, additional tubes were added to the Chassis to support passenger weight. Tubes have been added underneath the seats of the driver and passengers. An additional semi-structural floor would be added on top of these tubes to provide more structural integrity.

Past Construction of Bottom Panel:

Carbon Fiber Layers
1 inch nomex core
Carbon Fiber Layers

New Plan for Bottom Panel:

Semi-structural floor made out of carbon fibre reinforced polymer (likely 1/4 inch core)
1 inch tubes
Carbon Fiber Layers

Chassis simulations had to be carried out to ensure that the new chassis re-design still passes vehicle collision scenarios. The following are the results for the simulations. Since the design features only the chassis being structural, only the beam tool was used in this stress analysis of the vehicle collisions. The minimum combined stress and the maximum combined stress.

Summary of Chassis Vehicle Collision Simulations Analysis

Vehicle Collision	Minimum Combined Stress (MPa)	Maximum Combined Stress (MPa)	Notes
A Pillar
B Pillar
Back Bar
C Pillar
Front 30 Wall
Front 60 Wall
Front Bar
Side 30 Wall
Side 60 Wall
Top 30 Wall
Top 60 Wall
Top			Bottom Surface; Displacement z,y =0 area of investigation; try out opposite direction of acceleration?

4130 Chromoly Steel Material Properties

Property	Value
Young’s Modulus (MPa)	198 000
Poisson’s Ratio	0.294
Bulk Modulus (MPa)	160190
Shear Modulus (MPa)	76507
Tensile Yield Strength (MPa)	435
Compressive Yield Strength (MPa)	435
Tensile Ultimate Strength (MPa)	652
Compressive Ultimate Strength (MPa)	475