Advanced Stress and Structural Analysis | My Assignment Tutor

Coursework Specification Module InformationModule Title Advanced Stress and Structural Analysis Module Code Number KB7008 Module Level and Credit Points Level 7, 20 credits Module Leader Dr Matthew Blacklock Assessment Component Number (on Module Specification) 001 Assessment Weighting (on Module Specification) 30% Coursework Title Nonlinear Analysis of A Bending Beam Coursework Specification Author Dr Matthew Blacklock Academic Year and Semester(s) 2020-21 Semester 1 Coursework Submission and FeedbackRelease Date of Coursework Specification to Students February 1, 2021 Mechanism Used to Disseminate Coursework Specification to Students eLP Date and Time of Submission of Coursework by Students March 11, 2021 by 1pm The mechanism for Submission of Coursework by Students eLP Return Date of Unconfirmed Internally Moderated Mark(s) and Feedback to Students April 9, 2021 The mechanism for Return of Unconfirmed Internally Moderated Mark(s) and Feedback to Students eLP and/or University email Assessment DetailsModule Learning Outcomes (MLOs) Assessed by Coursework MLO2 Analyse the theoretical and practical aspects of material nonlinearity and its influence on material behaviour. MLO4 Defend your engineering solution, design rationale or analysis. Coursework Tasks to be Completed by Students Polylactic acid (PLA) is a material commonly used in 3D printing. One feature of the 3D printing process is the ability to control the infill density and pattern of a part (figure 1). PLA has a relatively low yield stress and demonstrates plasticity for much of the stress-strain curve. The internal structure of the printed part effectively alters the material properties giving a range of stress-strain plots for different infill density and pattern. Figure 1. Various infill patterns and densities of 3D printed parts (source: A new area of research aims to investigate the effect of varying the infill pattern and density locally within a printed structure (example in figure 2). The hypothesis is that areas subject to high stresses would have a higher local density and areas subject to low stresses a lower local density. This has the potential to offer weight, cost, and time savings. You will be provided with tensile test data for two different configurations of PLA infill. These two datasets will be for a low- and high-density infill of a particular pattern (e.g. 30 and 80% infill, tri-hexagonal pattern). Figure 2. Example of localised infill density (30/80% tri-hexagonal pattern). Your task has two aspects: analyse the non-linear behaviour of these two configurations separately using finite element analysis and compare numerical predictions with the provided experimental data for a tensile test coupon (BS EN ISO 527).design and analyse the external geometry and internal structure of a simply-supported three-point bend test coupon (figure 3) to maximise the strength-to-weight ratio by varying the local infill (you may only use the densities and pattern provided). The maximum volume of your specimen cannot exceed 15,000mm3. The cross-sectional dimensions cannot exceed 25 x 25 mm in width and height and the length must be 150mm (see figure 4). Figure 3. Three-point bend configuration. Figure 4. Design space for three-point bend specimen. Technical Poster (A1 size) This task will be assessed through the submission of a technical poster. A template is provided for you to use. This poster should be aimed at an audience who are engineering graduates but non-experts in 3D printing. A marking rubric is provided and contains the following categories: Presentation (10 marks)Understanding and expression of the problem (10 marks)Finite element model setup (40 marks)Discussion of initial results – Prediction of single density tensile behaviour (20 marks)Optimisation of local infill density for three-point bend specimen (20 marks) Your poster will be uploaded to eLP. There will be an opportunity to print and test your optimised design during activity week as a formative exercise. This is not necessary for submission. Expected Size of Submission 1 page A1 poster, equivalent to 2,500 words Referencing Style You may use any appropriate referencing system outlined by Cite Them Right. An online guide to Cite Them Right is freely available to Northumbria University students at: Assessment Criteria A rubric for this assessment is provided below: Referral The Referral Attempt opportunity will generally take place after the end-of-level Progression and Awards Board (PAB). If you become eligible to complete a Referral Attempt but are subsequently unable to undertake the opportunity when required, you will be permitted to re-sit the module at the next scheduled sitting of the module assessment. This will typically entail the suspension of your progression on your programme of study until such time that you have completed the level and become eligible to proceed. Guidance for Students on Policies for Assessment The University has several policies for assessment. The following information, which is available to you from the link below, provides guidance on these policies, including relevant procedures and forms. Assessment Regulations and PoliciesAssessment Regulations for Taught AwardsGroup Work Assessments PolicyModeration PolicyRetention of Assessed Work PolicyWord Limits PolicyAssessment FeedbackAnonymous Marking PolicyLate Submission of Work and Extension RequestsPersonal Extenuating CircumstancesTechnical Extenuating CircumstancesStudent Complaints and AppealsAcademic MisconductStudent Disability and Unforeseen Medical Circumstances


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