+1-415-315-9853

info@mywordsolution.com

## Engineering

 Civil Engineering Chemical Engineering Electrical & Electronics Mechanical Engineering Computer Engineering Engineering Mathematics MATLAB Other Engineering Digital Electronics Biochemical & Biotechnology

In all but a very few vehicles today crumple or crush zones are employed as a method to decrease energy transfer to occupants in a crash.  For the most part crumple zones form a structural part of car such as frontal rail or rear bumper beams.  In the early phases of development these crumple zones can be designed through a series of equations which take in account materials properties and geometrical features.
This assignment comprises the subsequent three sections:

problem1.  Provide a literature review of thin-walled tube crushing and bending high-lighting mechanisms of deformation with respect to material and geometry including such phenomena of strain-rate sensitivity.

problem2.  Using an envelope of 600 mm in length, and a maximum of 100mm width and 100mm depth; design a crumple zone that is capable of absorbing ~8,500 Joules of energy at 50 km/h.  You can choose any geometrical shape and material to achieve this, but all choices have to be backed up by analytical equations.  Use a crush distance of 75% of the original tube length (ie. 400 mm).  Make sure if you use a strain-rate sensitive material you include this into your calculations.

problem3.  Depending on your material choice do the following:

i. If you select a metallic material for a single lobe of deformation show how strain and stress profiles and ultimately fracture (if takes place) progress throughout the deformation, show this through explanations, computation and images

ii. If you select a composite material show how the fracture mechanisms/stress/strain work through lobe or ribbon formation; again show this by explanations, computation and images

- This should be done as your own personal piece of work, no group work allowed.
This assignment should be presented as a formal methodical report with clear unambiguous references.  All computation and assumptions should be provided together with a complete explanation of all the terms employed.  This assignment should be typed and in Microsoft Word *.docx format.

Mechanical Engineering, Engineering

• Category:- Mechanical Engineering
• Reference No.:- M9884

Have any Question?

## Related Questions in Mechanical Engineering

### Earth is losing its supply of helium by escape from the

Earth is losing its supply of helium by escape from the atmosphere, because helium has a high median speed and (unlike hydrogen, which has even less mass) it does not chemically react to form heavier molecules as it difu ...

### Given the result of problem 67 estimate the magnitude of

Given the result of Problem 6.7, estimate the magnitude of the radial deflection of a pressurized cylinder as a fraction of its thickness Problem 6.7: Given that the hoop strain is likely to be a very small number, estim ...

### While brewing beer a delinquent professor finds it

While brewing beer, a delinquent professor Finds it necessary to rapidly cool the "wort," a fermented malt mixture, from near the boiling point of water to room temperature. A 5.7 L sample of the wort at 363 K is combine ...

### A critical bolted joint in a nuclear power plant requires a

A critical bolted joint in a nuclear power plant requires a specific bolt preload. The access prevents a direct, accurate measurement of the actual bolt preload. It is planned to use a UNF 7/16-20 bolt with a root diamet ...

### If the speed of the shaft is doubled in given problem what

If the speed of the shaft is doubled in given Problem, what will be the percentage increase in the heat transferred from the bearing? Assume that the bearing remains at constant temperature. Problem An automobile cranksh ...

### A 1 in times 10 in plank on a redwood deck has l 48 in

A 1 in × 10 in plank on a redwood deck has L = 48 in long and supported on three joists that rest on the ground and so do not bend. The joists act as pin/roller supports for the plank. If a 130 lb person stands on the pl ...

### 1 why are micropower plants so different from larger ones

1. Why are micropower plants so different from larger ones? In what cases are they recommended? 2. Discuss which of the conventional alternative sources of energy is more suitable for use with induction generators to pro ...

### Assume that the level of water in the tank remains the same

Assume that the level of water in the tank remains the same and that there is no friction loss in the pipe, entrance, or nozzle. Determine (a) The volumetric discharge rate from the nozzle; (b) The pressure and velocity ...

### Sketch a joint diagram for a joint in the preloaded

Sketch a joint diagram for a joint in the preloaded condition, before an external load is applied to the joint. Assume that KJ = 5 KB ? We apply 43 ft-lbs of torque to a 3=8-28 2 J429, GR 8 bolt. We believe that the nut ...

### During the test of a centrifugal pump a bourdon pressure

During the test of a centrifugal pump, a Bourdon pressure gage just outside the casing of the 12-in.-diameter suction pipe reads 6 psig (i.e., vacuum). On the 10-in. -diameter discharge pipe another gage reads 40 psig. T ...

• 13,132 Experts

## Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

### Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

### Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

### Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

### Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

### Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen