Recent content by MayZ91

Hello all, I require your expertise on building an approach or a framework to identify and measure the jerk or vibration in a mechanical system with a slider. What I have is a slider (S) with a vertical link (L1) attached to it and another horizontal link (L2) attached at the tip of the link...

Hello Nidum, Thank you for the interest. I will start with the explanation of the system: It is a hydraulic cylinder, closed loop system. The reservoir is connected to the piston chamber, with the manually operated pump to suck the oil from the reservoir into the piston chamber through a...

Hello all, I am working on a few test scripts to test the life of a hydraulic cylinder. (It is a mechanically operated cylinder and has a positive displacement) The testing will involve thousands of continuous pump and retraction operations, due to which the temperature of the piston seal and...

I ran the kinematic analysis again, this time without using the gravity and the effect of load on the table is converted to the force(which is the exact scenario as taken for FEA). And I found the actuator vs force. The curve pattern remains the same, only the magnitude drops. From the above...

The graph what you see here is plotted for a constant velocity of 4.4mm/s The actuator is only capable of providing a constant velocity. The only acceleration component is the gravity itself. Link CD becomes perpendicular to the horizontal plane, static analysis shows maximum force at this...

The acceleration is far lower than 10x, and the inertia of the components is less than 20% of the load acting on the table. So, I was expecting a difference between the kinematic(which takes inertia n acceleration into account) but not as high as greater than 1.5 times. I am certain about the...

Would it be because the actuator is only partially under the load path?

Hello CWatters, Thank you for the reply. Since the system has too many unknowns for the free body diagram to be resolved, we have used tools like adams(for kinematic analysis) and abaqus(for static analysis) to solve the problem. I have pasted the basic line diagram below, on how the system...

Hello all, I have an actuator to lift a table, with certain amount of wait on it. Since I have mounted the actuator in an angle, I had to analyze the load on the actuator. However, the velocity at which I am lifting the table is bare minimum compared to the load on the table. So I had the...

Please help!

I have updated my calculations, also have put the equations: (sorry for a change in notations)

Hello all, I am stuck in this problem, kindly help me resolve. Thank you.

Extremely sorry for missing the spreadsheet. What I have done is, i have built the geometric relations between the angles made and spring deflection. And hence calculated the force on the link AE. Resolved for its components and using moment equation about the stopper, have found the link force...

Hello all, Yet another problem on engineering mechanics. This time I have a spring loaded; counterpoised arm: Something like this- http://www.akwmedical.com/files/imagecache/cart/SK2323_1.jpg http://t3.gstatic.com/images?q=tbn:ANd9GcTUCvnSKhKEbs4uNiOLg2TGU3p0quUrSp8Uh4QXqt5m4eIEf6_ISA What it...

And the UDL is decided based on the test conditions. I do not know how that decision is made. Also, to make it clear, i am not worried about the load beams or the beam CD. My concern is the bending of the piston of the hyd cylinder.