Truss Design Challenge Experiment

	Truss Design Challenge Experiment - Group 4 (2939553)
	by Suzette Burckhard (SDstate_Civil_Engineering)
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	Experiment Description
	For this experiment, the students in the lab were
	required to design a truss or bridge to span a specific
	distance and resist a 100 lb load in a four point flexure
	test. All the requirements for the bridge are shown below:
	Span length of 400 mm
	Width of 75 mm
	Maximum height of 75 mm
	Maximum weight 100 grams
	Must hold 45 kg (100 lbs)
	No adhesion (glue, etc..) for connections

	The challenge for the student in this experiment was
	their bridge had to be printed in separate parts because
	the bridges were to large to print all at once. The
	students had to design connections for these parts
	without the use of glue or other adhesives. The
	connection design was critical because that is the
	weakest points on their trusses.

	Information on Group 4 s Bridge:
	This is the design from Group 4 in the laboratory. This
	group decided to design their own truss for this
	experiment. They took inspiration from the Warren and
	Howe truss for their design. This group had a more
	complex and asteticallying interesting design with a
	total of 7 parts. Their intent with the taller midsection
	was to resist the high moment acting at the midspan of
	their truss. The bridge had a total weight of 85 grams
	and resisted a load of 60 lbs. The truss failed due to
	the tall rise at the midspan. This tall midspan caused
	the bridge to overturn laterally during testing because
	of the larger lateral moment arm acting on the truss at
	this point. The group recommended to increase the
	thickness of the members at midspan or simply shorten the
	height of the midspan to improve the truss design.

	Note:
	The handout for this experiment will be available soon. I
	will provide a link to the handout in this description
	when it is complete, so you can perform this experiment
	yourself or with your students.

	Date Published: 2021-01-20 05:43:04
	Identifier: thingiverse-2939553
	Item Size: 1335198
	Media Type: data

	# Topics
	DesignProject
	design
	truss
	testing
	engineering
	Civil_engineering
	thingiverse
	bridge
	teaching
	Engineering
	structure
	Student
	education
	bridge_test
	experiment
	stl
	Laboratory

	# Collections
	thingiverse

	# Uploaded by
	@xtream1101

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