Design of Pliers
Project #1
Mech 4336
Principles of Engineering Design
Group #10
Gilbert Paquian
Rogelio Grisanti
Jorge Serrano
Ricardo Mejia
Gus Martinez
Introduction:
The first project of the semester is the design and analysis of a pair of pliers, these pliers are to have the ability to tighten/untighten nuts or bolts, and cut through wires. Group 10 is to make a design for these pliers, make a 3D cad model on a design software package. The group is then to perform a series of analysis that include: load analysis, stress analysis, and deflection analysis. All is to be validated with a design software package.
Background:
The analysis of these pliers is going to depend heavily on the choice and use of materials. A basic understanding of material selection is in order. Most structural engineering materials in use today are metal or metal alloys. Metals are an incredibly versatile material because their properties range so far in many aspects. For example when high strength is needed there are some metals that have a huge load bearing capability, and when deflection is desired in a design there are some metals with a high modulus of elasticity. Of course all is a balance; there is not one single material that is lightweight, high modulus of elasticity, high strength, etc. But it is an engineers’ job to choose the material that will suit his design the best. For example in this project the team was looking for a material that had a very high tensile strength but a high level of toughness, in order to have toughness one needs a material that has some deformation. A very hard and brittle material is not ideal in a design like this one. Obviously a material with a high modulus of elasticity would help with the brittle problem, but it would deflect and yield far too much under loading. For this reason the team decided to use the material L2 Low-Alloy Tool Steel. It has a high enough level of tensile strength to withstand the loading a human can exert on the plier handles,
Mech 4336
Principles of Engineering Design
Group #10
Gilbert Paquian
Rogelio Grisanti
Jorge Serrano
Ricardo Mejia
Gus Martinez
Introduction:
The first project of the semester is the design and analysis of a pair of pliers, these pliers are to have the ability to tighten/untighten nuts or bolts, and cut through wires. Group 10 is to make a design for these pliers, make a 3D cad model on a design software package. The group is then to perform a series of analysis that include: load analysis, stress analysis, and deflection analysis. All is to be validated with a design software package.
Background:
The analysis of these pliers is going to depend heavily on the choice and use of materials. A basic understanding of material selection is in order. Most structural engineering materials in use today are metal or metal alloys. Metals are an incredibly versatile material because their properties range so far in many aspects. For example when high strength is needed there are some metals that have a huge load bearing capability, and when deflection is desired in a design there are some metals with a high modulus of elasticity. Of course all is a balance; there is not one single material that is lightweight, high modulus of elasticity, high strength, etc. But it is an engineers’ job to choose the material that will suit his design the best. For example in this project the team was looking for a material that had a very high tensile strength but a high level of toughness, in order to have toughness one needs a material that has some deformation. A very hard and brittle material is not ideal in a design like this one. Obviously a material with a high modulus of elasticity would help with the brittle problem, but it would deflect and yield far too much under loading. For this reason the team decided to use the material L2 Low-Alloy Tool Steel. It has a high enough level of tensile strength to withstand the loading a human can exert on the plier handles,