Why do torsion forces reduce the size of the spaces in a substance?Why does a piece of yarn or rope made by twisting several fibres together have a much higher tensile strength than a single fibre?
This Site Might Help YouRE: What is the difference in 4x4 and z71 trucks?? I have a 1994 chevy 4x4 and my freind has a 1994 chevy z71.the only difference I can see is the colors and the fact that mine says 4x4 and his says z71 on the sideis there any mechanical difference??
Two interesting questionsWhen you set a heavy weight on a surface the surface supports the weight as its atoms and molecules are compressed taking up the load (and this reduces the 'volume' of the compressed surface)The contact surface of the weight also compressesThis is known as a compressive load that can be increased to failureIn like manner, the torsion of a (massive) body (as opposed to an ideal mathematical body) compresses its atoms and molecules to take up the load, reducing its volumeIn tension (of a rod?) the atoms and molecules are stretched apart increasing volume although the diameter of the rod will shrink and there should be a net change in volume depending upon the material and its strength (easily observed if the 'rod' is a rubber bungy chord where length and diameter changes can be readily measured)If say one hundred parallel fibers were connected between two plates and placed in tension will they exert more resistance (to failure?) than a hundred fibers twisted together and pulled between two plates? The main difference should be the loading of the fibers, especially at the endsFor individual fibers, there likely is a stress riser at the connection to the plates (knots, etc.)For the twisted fibers tension is applied along a finite length of fiber avoiding a sudden rise in local tension and the connections to the plates are as a bundle, avoiding a stress riserAlso, for individual fibers, their lengths may have to be exactly identical for all to equally share the load and application of the load must be parallel to all the fibersFor twisted fibers the load is averaged and the fibers are also under a slight compression (from other fibers) that may help rather than hinder.
Z71 is a suspension package for off roadingA 4X4 has two differentials and a transfer case so the truck can grip the ground with both axlesIf the Z71 is rear wheel drive then the 4X4 is definitley better for off roadingThere is a huge difference, the 4x4 will perform 10 times better in slippery conditions than a rear wheel drive Z71 assuming it is RWD So there you have it your truck is way better than his! The 4x4 option makes your truck more valuable and more versatile.
Z71 is just an up grade pacage on the 4X4 and cost more same truck just diffrent pacakaging of options
