Structural analysis is the determination of the effects of loads on physical structures and their components. Structures subject to this type of analysis include all that must withstand loads, such as buildings, bridges, vehicles, furniture, soil strata, prostheses and biological tissue.
Questions tagged [structural-analysis]
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Why are engine blocks so robust apart from containing high pressure?
Lately, I've been pondering why some engine blocks are so bulky, I always thought intuitively it was because they had to last a long time whilst containing thousands of combustion cycles but the more, I look into the reality of engine design that…
David Nolan
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General solution for the most critical pattern of live loading
From ASCE 7-05 code:
ASCE 7-05 Section 4.6 states "The full intensity of the appropriately
reduced live load applied only to a portion of a structure or member
shall be accounted for if it produces a more unfavorable effect than
the same…
Graviton
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Vertical wave action on bridge
Rio de Janeiro, Brazil is currently stunned by the fact that yesterday a span of a brand new (innaugurated in January) bicycle bridge along the coast collapsed when struck by a wave, killing some people that were on it at the time.
A few videos have…
Wasabi
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Interpretation of shear flow/shear center of L-profile
I have calculated the shear flows and center of an L shaped profile. I assume they are correctly calculated (I followed the same steps as during the lectures for an I shaped profile). However, I have some problems with the interpretation of the…
Simon
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Why do stress concentrations really occur?
From doing some research I've learned that internal stresses inside an object can "concentrate" on sharp edges, as shown in the above picture. For that reason we often make fillets so that the change in diameter is smoother and we get a smaller…
S. Rotos
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Can I reduce the column moment due to beam, by setting the beam end to pin?
I have a structure, which contains only frame elements ( beam and column).
From what I know, if I apply point load at the columns on both left and right hand side,and if the beam-column joint is rigid, then the column at the center will experience…
Graviton
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What does it mean when actual member reaction is 100% of allowed?
I received construction documents for an extensive residential remodel and looking at the engineering there's a glulam drop beam with a calculated member reaction that is 100% of allowed (3965 lbs @ 5 1/2"). No other member comes close to 100%.…
user5867
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How do you check a weld for applied moment?
I have a single angle connected to a double angle via a 3/16" weld
I know there is a factored, applied moment at that connection. I would like to ask how I can go about checking the capacity of this connection for moment? There is a lot of stuff in…
user32882
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What is the maximum angle of a shelf angled brace?
So suppose I want to make a single shelf protruding from a wall and to place a heavy object on it (Figure 1). A shelf like this would fail (assuming no internal mounting that penetrates into the wall).
As such, in an ideal scenario, I would want…
Davbog
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Principle of Virtual Work vs Castigliano's (Second) Theorem
I had a look online and into some literature however I did not seem to find a good comparison for the two different methods. They are both used for determining displacements and slopes (rotation by theta) at a point in a continuum.
Former uses a…
thephysicsguy
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How to simulate a crack in a PCB?
I want to break this PCB with some know force of X newtons in the bottom left tip of the PCB. The problem is that in Static Dynamics I just get infinite deformation and in explicit dynamics I really don't know what to do.
Anyone knows how to do…
Gabriel Barros
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Why the design of continuous beam is always more economical than beam with supports?
Assuming that I have a beam that spans across a few supports. I can design the beam as a continuous beam (a beam that is loaded and has more than two supports), or individual beams that each encompass between two supports.
From what I know, the…
Graviton
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Truss manufacturer drawings unclear
I am currently looking at a set of truss layouts produced by our truss manufacturing partner for a residential building project. I have reason to believe these layouts are generated using Alpine (Intelliview?) software. In any case, the design…
user32882
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How to derive Equivalent Static Load for irregular structure modeled with FEM?
Building codes such as the Uniform Building Code (UBC) or International Building Code (IBC) require the determination of Equivalent Static Lateral Forces in order to compute $P-\Delta$ effect and to perform checks on the structural design.
However,…
Graviton
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Should P-Δ effect be considered for struts of a braced excavation?
Building codes such as BS5950 provide clear guidelines on how to consider P-Δ effect due to sway of a vertically loaded portal frame or single storey building, causing additional moment in the columns.
Should this sway frame effect be extended to…
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