Engineering Questions, Problems & Solutions : TransWikia.com ~ Page 74

Why does flow separation cause stall when it creates a low pressure zone?

In an airfoil, a low-pressure region forms in the turbulent wake created when the flow separates. Wouldn't this cause an increase in the net vertical force acting on the airfoil...

Asked on 12/17/2020 by Nader Besada

2 answer

Is using a 4x4 bolted to the face of 2x12 enough?

I am working on a project that has three 2x12’s supporting a load of 12,000 lbs. similar, but not exactly, to how joists support a house. The 2x12’s are supporting...

Asked on 12/17/2020

1 answer

Covariance of an uncertain vector going through an uncertain rotation

I have a vector $omega$ and it associated covariance, a rotation $mathbf R$ and its associated covariance. What is the covariance of $mathbf R cdot omega$ ?...

Asked on 12/16/2020 by Maltergate

1 answer

How much should I put effort to refine a Response surface?

A response surface that I have obtained from a DOE analysis with multiple variables, show small irregularities when I plot 2D variable-vs-variable curves . like somewhere it should be exponentially...

Asked on 12/15/2020 by FabioSpaghetti

2 answer

Does a change in specimen dimension affect the measured yield strength and tensile strength?

I am having a hard time trying to understand the effect of geometry on a specimen's yield and tensile strength or if there even is one. If there is an...

Asked on 12/15/2020 by hhu6403

2 answer

Can gravity be a driving force for a spring-mass system?

If a spring-mass system is undergoing free vibration (oscillating up and down), then does it imply that there is no gravity? My tutor always consider gravity when finding the Equation...

Asked on 12/15/2020 by Mason Z

3 answer

Simplest software for making 2D and 3D visualizations(animation),

I have to do simple visualization or animation of movements for simple hand prosthesis. There are no validation or calculations required. I just want to show concepts working principles (movements...

Asked on 12/15/2020 by AR2R

2 answer

How to query stress and strain values in a specific element in Abaqus?

I am trying to find easier way to get stress and strain values in a specific element in Abaqus.Does anyone know how to do it? Is it possible to...

Asked on 12/14/2020 by Cindy.Karina9

1 answer

Are the modal participation factors bounded for shock response spectrum analysis?

Recently dug myself into the theory of shock response spectrum analysis, but one thing is not clear for me. The theory says that the peak response of the structure can...

Asked on 12/14/2020 by G.David

1 answer

Calculating shaft diameter

I'm designing a circular shaft that's going to carry a spread radial load of about 200kg and also transmit a 160Nm torque. I'm not very familiar with materials but what...

Asked on 12/14/2020 by php_nub_qq

2 answer

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