Recent content by spggodd

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    Calculating Torque Limit on a hollow shaft type component

    Wow, thank you both for replying with such detail. Those answers were exactly what I was expecting/hoped for! JBA - I really want to get to grips with the classical methods for analysis of basic and semi-complex components, as you said this will help get an initial understanding and will help...
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    Calculating Torque Limit on a hollow shaft type component

    I am designing a custom socket for an application at work and I am concerned about the wall thickness in the area marked by the red box (see attached drawing). The socket will be used to torque a nut to 500Nm. I have a degree in mechanical engineering and I can do stress calcs on straight...
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    How to calculate natural frequency of a circular plate

    Also, the accelerometer I'm using is currently stuck down with duct tape on the outer edge of the component. |----| |...| <------- here |...| |...| |...| |...| |...|--------| |.....| |----- - -----| - ----- - ----- |.....| |...|--------| |...| |...| |...| |...| |...| |----|
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    How to calculate natural frequency of a circular plate

    I am trying to get used to using a Data Physics analyzer at work in order to measure the natural frequency of components of a larger project I am involved in, my method described is intentionally crude as I was trying to do this as a quick play around before diving into the real thing.. To...
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    Combined Loads (forces and moments) on composite lamina

    Homework Statement I have a laminate subject to 3 forces and 3 moments: Nx = normal force resultant in the x direction (N/m) Ny = normal force resultant in the y direction (N/m) Nxy = shear force resultant (N/m) Mx = Bending moment resultant in the x direction (Nm/m) My = Bending moment...
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    Top 6 challenges for engineering in the first quarter of 21st Centrury

    To kick things off my thoughts were: - Energy Demands - Growing and improving our high tech and space related industries - Large EU/International collaborative engineering projects - Plantetary Protection - Cyber Defense - Sustaining the growth of UK manufacturing.
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    Top 6 challenges for engineering in the first quarter of 21st Centrury

    Hey all, I have an interview coming up and I have been asked to consider the following question: "What are the top 6 challenges (technical, commercial, ethical, regulatory, etc..) facing the UK engineering profession in the first quarter of the 21st Century?" I was hoping I could start...
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    Reactions of a redundant frame structure using Unit Load Method

    I've been going over this and I'm struggling to grasp how I got the bending moment equations for each member. Also, my lecturer seems to specifically use a "System 0" and "System 1"... Etc. The method in using seems to kind of match some of the examples, such that it uses the Stationary of...
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    Reactions of a redundant frame structure using Unit Load Method

    NVN, thanks for your response. I'm glad I've finally seemed to crack this! Sent from my iPhone using Physics Forums
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    Reactions of a redundant frame structure using Unit Load Method

    Ok, no worries. Do you agree with the rest of my calculations though?Sent from my iPhone using Physics Forums
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    Reactions of a redundant frame structure using Unit Load Method

    Hi NVN, To get rid of EI I just multiplied both sides by EI, this gets rid of the term right? Also, where do I need to use A?Sent from my iPhone using Physics Forums
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    Reactions of a redundant frame structure using Unit Load Method

    Hi PhantonJay, I think I may have got somewhere with this last night.. Replacing support D with two redundant reactions R1 and R2 gives the compatibility equations of: ΔDy+a11R1+a12R2=0 ΔDx+a21R1+a22R2=0 Using the unit load method to calculate the displacements and flexibility...
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    Reactions of a redundant frame structure using Unit Load Method

    Ok I have got to the point where I have Forces in X = 10000 - Ax - Dx = 0 Forces in Y = Ay + Dy = 0 Moments about D = 10000 x 1 - Ma + Ay = 0 Which gives me: Ax, Dx, Ay, Dy and Ma as my unknowns with 3 equations to solve. ------------------------------- Removing supports at D and doing the...
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    Reactions of a redundant frame structure using Unit Load Method

    Homework Statement Hi, I am having trouble with the following problem and I can't seem to find any examples: I am trying to determine reactions at points A and D of the redundant structure below using the unit load method, there is a 10kN load at the top left point (B), all lengths are...
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