BIO ENG C117 Study Guide - Midterm Guide: Modulus Guitars, Medical Device, Fighting Network Rings
Document Summary
______________________________________________________________________________ (100 pts) you are an engineer working for a medical device company, and a surgeon proposes a design for a spinal disc replacement that is shown below. The device is made up of a core that is surrounded by rings. The surgeon tells you that the reasoning behind their design is to mimic the basic structure of the natural disc. The core supports load by pressurization, and the rings will keep the core from over expanding. This is analogous to the nucleus pulposus and annulus fibrosus of the natural intervertebral disc. The core is made from a soft and incompressible material, and the rings are made of. Dimensions and material properties of the device are given below: Core: diameter, dc = 3. 00 cm, height, hc = 1. 00 cm. Ring: modulus, e = 200 gpa, yield strength, yld = 600 mpa, diameter, dr = 0. 50 mm, 3 total rings (initial design)
