EE
2004-S2-Q4-Solution

2004-S2-Q4-Solution - CHE3108 Q4 Mechanical Design(14 marks...

Info icon This preview shows page 1. Sign up to view the full content.

CHE3108 Q4 Mechanical Design (14 marks) Mechanical design formulae are provided on page 12. As part of your busy day, you also need to complete the design of the purge stream evaporator. The evaporator is a vertical cylindrical vessel 2.0 m in diameter and 3.0 m between tangent lines. It has a design pressure of 5 bar (g). You have already designed the shell and must now design the two elliptical ends, both of which will have a ratio of major axis to minor axis of 2. The wall thickness of the ends (after the corrosion allowance has been deducted) is 6mm. a) Explain what is meant by plane stress and why it can be applied to thin walled pressure vessels. (3 marks) Plane stress is stress distribution in a 2d plane. The plane stress simplification is only appropriate when the stress in the third direction (through the thickness of material) is negligible compared with stresses acting in the direction of the plane. It can be applied to a thin walled pressure vessel because the stress normal to the plane is
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern