Challenge

Roof challenge

AArjun Bedi29 Jul 2022

section	ALPHA	t	s	Rx	Ry	ly	Qr	ok/not ok
1	1.06	0.75	522.95	6136.91	3178.35	6.675e+03	31.44	ok
2	1.27	0.75	489.25	5442.104	7362.53	4.247e+03	93.49	ok
3	0.79	0.75	450.8	3271.58	15529.78	1.85e+03	3.306	ok
4	0.26	0.75	149.85	5517.89	5228.58	1.054e+03	51.51	ok

snow load condition

section	L	R	t	l	W	ok/not ok
1	1964.3	4052.59	0.75	811.8	2.007	ok
2	1964.3	5727.55	0.75	296.7	1.845	ok
3	1964.3	5708.180	0.75	519.7	2.084	ok
4	1964.3	5225.32	0.75	106.4	1.5	ok

heat distortion condition

Curvature study- As the bend in the roof is more in the front side of roof, the bending resistance is more in thefront and the bow roof 1 can hence be placed closer to the centre roof rail.

Manufacturing processes used- 1) Deep drawing- Deep drawing is a process in which sheet metal is radially drawn in a forming die by mechanical action of punch. It is thus a shape transformation process with material retention. The process is considered deep drawing when the depth of the drawn part exceeds its diameter.

2) spot welding- It is a type of electric resistance welding used to weld various sheet metal products through a process in which contacting metal surface points are joined by heat obtained from resistance to electric current.