Overall Summary of Pedal Brake Design - Assignment Example

Pedal Brake design Group name Your name University ID Course name Submission Date Table of Contents Part A 3 Overall summary of design 3 Solid models 4 Specification 6 Part B 7 Justification 7 Document and justify the methodology 7 Stress Calculations 7 Bolt Calculations 8 Key images related to the topology optimization and solid modeling processes 10 Design summary 13 Part A Overall summary of design There has been accurate drawing meant to show very well designed the structure pedal brake. During the drawing of the various parts of pedal have been included that is those one requires to know and design some basic information that is typically known. For example, the typical information includes the shaft, inner and outer size, particular number of blades and their bolts. However, there are some manufacturers that do change particular internal designs so as to complicate the specifications. Consequently, the specified bearings sizes are not changed. What the manufactures guarantee is that the typical information concerning parameters: size, speed or load deployed: is not easily known. The design ascertains how pedal brake could be jointed to give a more reliable and functioning brake. It is from this understanding that this report is based in an attempt of communicating these findings. The designed brake pedal showed that use of Aluminum 1060 Alloy of masses 8kg, 4kg 1kg and 0.5kg for Part A, part B, bolt and nut respectively. Aluminum alloy was used because of its relatively low density ρAL = 2700 kg/m3 that is a desirable for a low weight solution. However, the supposed design is normally monitored as a way of determining the relative specification regarding brake so as to plan well certain preventive and maintenance procedures. Therefore, a slight change in parameters weight could bring an effect on the entire pedal brake. How these changes could be coordinated to give a more desired aftermath was integral in this design. Obtained results show that the efficiency of the pedal brake was varied with an effect of changing both usages. In addition, there are other different techniques like the pedal length measurements as well as weight analysis which are also deployed as a way if establishing the nature of particular elements and the degree of the brake. Solid models Design was done using Solidworks Image is imported before being dissected and simulated Specification Mass and materials mass kg materials density ρAL( = kg/m3) cost $2 per kg part A 8 Aluminum 1060 Alloy 2700 16 part b 4 Aluminum 1060 Alloy 2700 8 bolt 1 Aluminum 1060 Alloy 2700 2 nut 0.5 Aluminum 1060 Alloy 2700 1 In designing the Pedal brake three variables are involved weight, material straight and speed. Available options for pedal Technical Specification Model Model 1 Model 2 Model 3 pedal ratio 8.5:1 8:1 8.5:1 Power 600rpm 500rpm 600rpm Maximum torque 200rpm 240rpm 210rpm Overall length 20mm 22mm 23mm Weight 12.5kg 12.2kg 12.3kg There are completely four components that will need to be controlled are pedal ratio, overall length and Weight. Assumptions are always necessary to conduct many calculations and so the first assumption and type of pedal speed will be 5m/s and mass of 12.5kg. Design steps and the logic sequences Designing is very important in pedal brake as it allows components to assembled using proper dimensions. It will be designed in a manner that will take a less energy to pedal easily safely.. However in order for cars to be parked easily, the system capability and characteristics of the materials plays Step 1; identify the measurement of pedal brake Step 2: identify the dimensions of pedal Step 3: determine type material to used Step 4: determine weight, pedal ratio Step 5: draw the model Part B Justification In this section, the brake pedal is selected as the target function. The main aim of the mission is to have a bike that works continuously have when in use. Therefore it should have ability to control the bike without causing harm to users. Mass of materials will be affected by the cost incurred that is why the value is strong. Density has a huge impact the entire operation of the braking system. This implies that effectiveness and efficiency of breaking speed will depend on tensile strength. The working life of the pedal brake should cover the period of five years. The Spirit and Opportunities are designed to working for three months, but they all work more than three years. Document and justify the methodology The pedal brake will consists of a movable pin which allows the its motion. Stress Calculations This is very important in ensuring material used are not strained beyond capacity. We begin with bolts and pins helping to attach the various components together. The triangular beam supports are fixed onto the frame hence not exhibiting and shear stresses when the car is stationary. However, once movement begins shear stress is present in the structure because it resists the entire weight of the car from the beginning till it descends completely. Bolt Calculations To decrease this stress, it is advised to use a bolt to distribute the stresses. To know which bolt would be most reasonable for this application, certain calculations are needed as shown below: A specification sheet card is available as shown below from which the bolt will be selected. For this case for safety reasons M10 is chosen which has an allowable load of 429kgf. The diameter of this pin is necessary and is calculated as follows: Where F = 10,000 N and  = 275 MPa The tensile strength has a maximum value of 500 MPa and a young’s modulus of 210,000 MPa. Further calculations to determine the size are as follows: Using the data sheet below, the helical module 5 was chosen: l Key images related to the topology optimization and solid modeling processes The Solidworks drawing shown Key images related to the topology optimization and solid modeling processes. Specifically, the gross weight of the pedal brake is much lighter than a available in market but firm. Furthermore, the pedal brake is able to function normally like other pedals. Design summary As required, the braking velocity, mass of materials used, Bolt sizes, load was determined. Diagram 1 & 2 shown above are shows other parts of brake on the data recorded and calculations done to validate Design. The design was done successfully to understand the methods of pedaling and the concepts. Read More