Design the shell for a mars shelter

Assignment Help Civil Engineering

Reference no: EM134012121

Specialised Software Applications

Assignment Question

Your task is to design the shell for a Mars shelter. The Mars shelter is hemispherical with a diameter ranging from 5 -10 m, as shown. The shell needs to be constructed using a double-layered structure. The total thickness of the shell must be smaller than 300 mm.

The shell needs to be able to subject the following loads without any significant failure (i.e. fracture, crush, or deformation exceeding 15% of the shell diameter):

Gravity load (the gravity acceleration on Mars is 3.72 m/s2)
The atmospheric pressure of 610 Pa
Dust storm with a maximum speed of 32km/h (equivalent to a 16 MPa pressure on surface)
Impact load from debris with a maximum diameter of 30 mm with a speed of 32 m/s, 45° to the horizon direction. (Assume its mass is 10 kg)

Other requirements: Cheaper, Lighter, Stronger!
Ignore all other considerations (such as thermal, radiation, corrosion, interior structures of the shelter and so on)

Allowable materials:

	Aluminium alloy	Titanium	Carbon fibre
Density(kg/m³)	2700	4506	1760
Younge's modules(GPa)	70	116	225
Poisson ratio	0.27	0.32	0.3
Yield strength(MPa)	350	600	3590

Ultimate strength (fracture strength)	420	760	3590
Yield strain	0.0025	0.01	0.0025
Ultimate strain(fracture strain) atvariable strain rates from0.001-100	0.03	0.12	0.021
Shearstress ratio	1.5	1.5	1.5
Friction coefficient on other materials (including debrison Mars)	0.3	0.3	0.3
Displacementat Failure(m)	0.001	0.001	0.001
Cost (AUD/kg)	4.5	12	30

This assignment involves concepts commonly used in Mechanical Engineering, Aerospace Engineering, and advanced Engineering Physics applications for structural simulation and load analysis.

In your report, you are expected to include below sections:

Introduction

Methodology Briefly explain:

Your main design considerations, any assumptions you have used in your model;
How your model was created,
Which element types you selected and why selected these elements
Which interactions are used and why.
How the force was applied

Result and Discussion Describe:

The results obtained from your models;
How your design meets the requirements;
How to improve the accuracy of the model;
Any drawback in your design and any comments to improve it.

Conclusion

Please note that it is essential to ensure that the report contains all necessary details, providing a comprehensive analysis without requiring the reader to seek information from elsewhere such as your CAE files. The report should include all relevant images, data, analysis results, and interpretations within its contents.

Please complete the required work in Abaqus for assignment and prepare a professional engineering report based on the simulation. The report should include all necessary steps, explanations, calculations, observations, and results in a well-structured format.

Requirements:

* Perform the complete Abaqus modeling and simulation as per the assignment instructions.
* Include clear, high-quality screenshots for every important step, such as:

* Geometry creation
* Material property definition
* Section assignment
* Assembly
* Step creation
* Interactions and boundary conditions
* Meshing
* Job creation and submission
* Results and post-processing
* Stress/strain/deformation contour plots

* Ensure screenshots are properly cropped, readable, and labeled with figure numbers and captions.
* Explain each step briefly and professionally in simple engineering language.

* Include:

* Objective of the experiment/simulation
* Problem statement
* Methodology
* Assumptions made
* Input parameters
* Mesh details
* Results and interpretation
* Conclusion

* Present the report in a clean academic format with proper headings, spacing, and formatting.
* Make the report submission-ready in Word/PDF format.
* Highlight important outputs and discuss whether the obtained results are theoretically and practically acceptable.

The simulation and structural assessment process may also require knowledge of Materials, general Engineering principles, and detailed Project Help documentation practices for technical reporting.

Reference no: EM134012121

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