Looking for formula for lateral and/or eccentric loads

  • Thread starter RWS000
  • Start date
  • Tags
    Formula
In summary, a load cell sensor is used to measure the resultant vertical force load to the top of the load cell sensor when a horizontal test load is applied.
  • #1
RWS000
11
0
Need formula to calc. lateral and/or eccentric loads on trailer hitch ball when moving down the road hauling a trailer with gross trailer weight (GTW) of 10000 lbs, Tongue weight (TW) of 1200 lbs.
 
Physics news on Phys.org
  • #2
Can such a thing be calculated? Weight acts vertically so where would lateral forces come from? Cornering? Vibration? Cross winds? Impacts from holes in the road? Does resonance/swaying play a role? Not my field but sounds like a lot of unknown factors come into the likely forces on a hitch.
 
  • #3
Sorry for late reply...out of pocket.
Anyway, let's see if I can use a non moving situation for testing. Assume a weight sensing load cell is inserted under hitch ball (between hitch ball base and top of drawbar). Then nut at bottom of shank of ball is torqued tight against bottom of draw bar creating a vertical "preload" on load cell sensor of 12,343 lbs. Then a horizontal test load of 30,000 lbs is applied to the center axis of hitch ball. The distance from ball axis to bottom of ball base is 2.125 inches. The thickness of sensor is 20mm. The thickness of drawbar is 19mm. I am confused on how to develope a full force diagram to determine the resultant vertical force load to the top of the load cell sensor (so I can determine what capacity load cell to purchase verses the load that will be applied to it in this situation). Can you help me?
 
  • #4
So basically there is a horizontal shear force applied to a sensor that is intended to measure only vertical loads. If the load cell was "ideal" it would only indicate the preload of 12,343lbs because the horizontal test load of 30,000 has no vertical component. However the sensor is unlikely to be ideal. I think this is one the sensor manufacturer will have to help answer.
 
  • #5
CWatters said:
So basically there is a horizontal shear force applied to a sensor that is intended to measure only vertical loads. If the load cell was "ideal" it would only indicate the preload of 12,343lbs because the horizontal test load of 30,000 has no vertical component. However the sensor is unlikely to be ideal. I think this is one the sensor manufacturer will have to help answer.
 
  • #6
Tks much...
 

FAQ: Looking for formula for lateral and/or eccentric loads

What is a lateral load?

A lateral load refers to any force or load that is applied horizontally to a structure, as opposed to vertically. This can include wind, seismic activity, or any other type of horizontal force.

What is an eccentric load?

An eccentric load is a type of lateral load where the force is not applied directly in line with the structure's center of resistance. This can cause a bending or twisting effect on the structure.

Why is it important to consider lateral and eccentric loads in structural design?

Lateral and eccentric loads can significantly impact the stability and safety of a structure. It is crucial to consider these loads in design to ensure that the structure can withstand them and prevent any potential failures or collapses.

How can I calculate lateral and eccentric loads?

Lateral and eccentric loads can be calculated using various methods, depending on the type of load and the structure's design. This can include using mathematical formulas, computer simulations, or physical testing.

What are some common factors that can affect lateral and eccentric loads?

The magnitude and direction of lateral and eccentric loads can be influenced by factors such as wind speed, the shape and orientation of the structure, the type of soil or foundation, and the materials used in construction.

Similar threads

Back
Top