Unit 2: Engineering Design Process

Slides:

Advertisements

Similar presentations

Laws of Motion and Energy

Advertisements

Unit 2: Engineering Design Process

2 What You Will Do Define resistance training and identify its importance to your health and fitness. Identify the role of muscular strength and muscular.

How Machines Do Work Outline Notes Pages

Example 3 Each day, an elephant eats 5 pounds of food for every 100 pounds of its body weight. How much does a 9300 pound elephant eat per day? SOLUTION.

 SMALL  50  BIG  100 ANTE 0 End NEXT LEVEL

1 Elasticities. 2 In economics we use the concept of elasticity to compare percentage changes in pieces and quantities. The price elasticity of demand.

Work, Power, and Simple Machines

Unit B 3.3 Useful Energy and Efficiency. Useful Energy The purpose of a machine is convert input energy into types of energy needed to do work. Anything.

Use the cross products property EXAMPLE 1 Write original proportion = x 6 Solve the proportion =. 8 x 6 15 Cross products property Simplify. 120.

Types of Simple Machines

Solids Gases Liquids Plasmas.

Section 8.2 Scientific Notation

Section 10.2 Machines Objectives

Simple Machines Machines Lever Inclined plane Pulley Screw Wedge Wheel & axle.

Chapter Nine: Simple Machines

* The distance over which the effort force acts in a simple machine. * The force exerted by a person or motor when using a machine to lift a load.

Foundations of Technology Pythagorean Theorem

The Human Body Chapter Nineteen: Support and Movement 19.1 Bones and Muscles 19.2 The Human Body as a Machine.

PSAA Curriculum Unit Physical Science Systems. Problem Area Energy and Power Systems.

Mechanical Advantage and Efficiency

Introduction to Nanotechnology Module 4 Pressure, Force and Density.

CHAPTER 4 SECTIONS 1 & 2 Work, Power and Machines.

Simple Body Machines. Simple Machines & Their Anatomic Counterparts A machine is a device which enables work to be done more easily and \ or more quickly.

LESSON 3-4, AN INTRODUCTION TO MECHANICAL TECHNOLOGY ENGINEERING DESIGN.

Body Mechanics.

What is a machine? A machine is a device that makes doing work easier. Machines can be simple. Some, like knives, scissors, and doorknobs, are used everyday.

Foundations of Technology The Systems Model

Chapter Eight: Work 8.1 Work 8.2 Efficiency and Power.

Section 5-2.  The work done by a machine is work output. Work output = resistance force x resistance distance.  The work done on a machine is work input.

1.Constraints are new products, systems, or processes that have never existed before. 2.An engineer is, in essence, a problem-solver. 3.Feedback is used.

1 Power 2 Work has to do with a force causing a displacement. Power is the rate at which work is done. How fast is the work being done. Work has nothing.

Criteria and Constraints Presentation Explanation © 2011 International Technology and Engineering Educators Association, STEM  Center for Teaching.

Structural Efficiency Foundations of Technology Structural Efficiency © 2013 International Technology and Engineering Educators Association, STEM  Center.

Mechanical Advantage and Efficiency

Work and Machines  Work is a form of energy. It is the energy that it takes to cause things to move. Sometimes called Mechanical Energy. The Formula.

Power – Learning Outcomes  Define power and its unit.  Solve problems about power.  Solve problems about efficiency.  Estimate power developed by:

Foundations of Technology.  Common components (levers, inclined planes, wedges, wheels and axles, pulleys, screws, gears, cams, linkages, shafts, couplings,

Fluid Technology Foundations of Technology Fluid Technology © 2013 International Technology and Engineering Educators Association STEM  Center for Teaching.

How Machines do WORK A Machine – is a device that allows you to do work in a way that is easier or more effective. INPUT FORCE – is the force you exert.

COLLECTING AND PROCESSING OF INFORMATION PRESENTATION © 2011 International Technology and Engineering Educators Association, STEM  Center for Teaching.

Work and Simple Machines

Bell Ringer Engine #1 produces twice the power of engine #2. Can we conclude that engine #1 does twice as much work as engine #2?

Chapter Nine: Simple Machines

U3b-L1 October 29, 2009 DRILL – Write the sentence and answer True or False Constraints are new products, systems, or processes that have never existed.

Chapter Eight: Work 8.1 Work 8.2 Efficiency and Power.

An engineer is, in essence, a problem-solver.

Mechanical Advantage and Efficiency

Collecting and processing of information Presentation 4.5.1

What machines do for us.

Lesson 3-4, An Introduction to Mechanical Technology

Unit Physical Science Systems

How Machines Do Work Chapter 12 Section 2.

Advantages to Simple Machines

Collecting and processing of information Presentation 4.5.1

Collecting and processing of information Presentation 4.5.1

Power – Learning Outcomes

Do Now: 02/19/2014 What type of simple machines are shown below:

Work, Energy and Power.

Foundations of Technology Pythagorean Theorem

Chapter Nine: Simple Machines

Chapter Eight: Work 8.1 Work 8.2 Efficiency and Power.

Foundations of Technology Structural Efficiency

Criteria and Constraints

Criteria and Constraints

Criteria and Constraints

Mechanical Advantage and Efficiency

How Do Machines Work Chapter 4 Section 2.

Presentation transcript:

Unit 2: Engineering Design Process Foundations of Technology Unit 2: Engineering Design Process Lesson 1: Engineering Design Process Structural Efficiency

The Big Idea Big Idea: The Engineering Design Process is a systematic, iterative problem-solving method that produces solutions to meet human needs and wants.

Who’s Stronger Who’s stronger, the elephant or the ant?

Who’s Stronger Asian elephants are often employed to lift thousands of pounds of timber for logging efforts. Yet, an ant is much stronger pound for pound. An ant can easily lift many times its own body weight due to their small size which creates a greater cross sectional muscle mass An ant is a more efficient worker

What is Efficiency? Efficiency is a ratio of your output versus your input. Efficiency is the ratio of the resources developed versus the resource supplied. Basically, efficiency measures the extent to which your device is functioning in the best possible manner.

Structural Efficiency In structural engineering efficiency is measured as the weight being supported divided by the weight of the supporting structure.

Crane Boom Efficiency For our crane boom: Efficiency = the breaking weight the weight of the crane boom The units must be the same! They will cancel out! Efficiency is a unit-less number (a ratio)