Static Door Hinge Problem

10 4 i have the friction hinge door so i am familiar with it and it s problems.

Static door hinge problem.

In the initial analysis of a problem hinge joints should always be assumed to exert a force in an arbitrary direction and then you must solve for all components of a hinge force independently. An unknown force. The ideal is a 1 8 inch gap between the door and jamb at all points. Three forces act on the door slab.

If one is loose remove two or more screws and try driving in longer screws. In this example the elbow force happens to be vertical because the problem assumes the tension by the biceps to be vertical as well. Forces on door hinges a swinging door that weighs w 400 0 n w 400 0 n is supported by hinges a and b so that the door can swing about a vertical axis passing through the hinges figure 12 16. Remove the top hinge pin and lay it on a concrete floor.

And the known weight. Using a hammer strike the pin in the middle this will cause a slight bend in the pin. The forces that the door exerts on its hinges can be found by simply reversing the directions of the forces that the hinges exert on the door. To solve this check that your door jamb is on the same plane so the door can close properly.

Simply tap the pin back into the hinge and test the door. The door has a width of b 1 00 m b 1 00 m and the door slab has a uniform mass density. An unknown force. Works good now rjsurfer.

Hence our task is to find the forces from the hinges on the door. Start by closing the door. Mine i had to adjust the camber as i couldn t get it to latch withough slamming. Mark both sides of the door.

The fix apply some resistance in the hinges. This will keep the weight of the door from binding on the other hinges. If a door binds and a loose hinge is not the problem close it until it just touches the jamb don t force it closed and use a pencil to scribe a line where the door needs to be trimmed. I was also able to use a screw driver to open the jaws of the friction hinge a smidgen.

If a door binds open it grasp the knob and lift up to see if a hinge is loose. On the latch side a door is cut at a slight bevel to make it easier to close.