All,
I need to check if a table with a motor mounted on top of it will stand still or not under a rotational torque, i.e. starting torque of the motor.
I added a top view of the square table with 4 legs (black). The rotation axis of the motor is indicated with a blue dot and is not in the...
I want to calculate the inertia of a SCARA robot. The arms/end effector move only in the XY-plane by rotating its 3 arms.
How do I calculate the total inertia around the Z-axis?
I_arm_1_Z = I_arm_1_COG + m1.r1^2
I_arm_2_Z = I_arm_1_COG + m2.r2^2
I_arm_3_Z = I_arm_3_COG + m3.r3^2
I...
Dear,
I have to design a table for a SCARA robot which will be mounted on top of this table. I'm not allowed to bolt the table (consisting of 4 legs bosch frame and aluminium top plate) on the ground (drilling of holes in the ground is not allowed). I need to know if the table will stand still...
Hi,
I have a composite wall of two layers of materials A and B tightly fitted to one another.
The cross-sectional area of A and B are not equal.
Questions:
- is the conduction Q through material A and B equal?
If so, then the heat flux (Q/cross-sectional area) through material A and B are not...
I want to reduce the heat conduction through a steel rod by locally reducing the cross-section of the steel rod. However, it seems that the conduction through the rod is not dependent on the position of the reduced cross-section (i.e. near the hot or cold surface). I'm trying to explain this...
Dear,
I want to make a state space model of a simple mass spring damper system with a base excitation as shown in the figure below.
The equation of motion is:
mx'' + bx' + kx = ky + by'
How can I write this in state space (A,B,C,D) format? I have difficulties with finding the B matrix.
y(t)...
All,
I'm designing a construction with 2 leaf springs in parallel.
I have found the formulas to calculate the lateral stiffness of the leaf springs on following website: https://www.janssenprecisionengineering.com/page/flexure-guiding-2-leaf-springs-in-parallel/
However, in my case, both leaf...
Hi,
I have a bottom plate resting on a table (see figure in attachment).
On top of this bottom plate is are series of springs and on top of it rests a top plate.
Between the bottom and top plate (inside the springs) is a seal to create a vacuum chamber.
Question: what is the total vacuum force...
Hi,
Does someone know how I can calculate the temperature rise from turning a screw spindle in a nut (thus no ball screw)?
The spindle is of stainless steel, the nut of brass. I don't use any lubrication.
Thanks.
I have a cup (see figure) that will be pushed on a conical tip with a force F.
The cup is not perfectly aligned with the conical tip and touches it in point 'A'. The cup is flexible supported.
In the X-direction it can translate via a spring with a stiffness K_x. The cup can also rotate via a...
Hi,
I want to calculate the deflection of a beam (tube) with a uniform load that is applied over a length Ww. The tube is supported by two other (smaller) rolls (see layout in the image below). All three rolls are mounted in a bearing at the end. How can I do this?
