《ANALOG AND DIGITAL COMPUTER METHODS IN ENGINEERING ANALYSIS》

1.BASIC ANALOG-COMPUTER THEORY1

1-1.Introduction1

1-2.Analog Versus Digital2

1-3.Basic Elements of the Analog Computer3

1-4.The Summing Amplifier4

1-5.The Use of Coefficient Potentiometers7

1-6.Potentiometer Calibration Corrections9

1-7.The Summing Integrator10

1-8.Symbolic Notation12

1-9.Operator Notation13

1-10.Magnitude Scaling14

1-11.A General Programming Procedure for Analog Simulation15

1-12.Compensating for Circuit Damping36

1-13.Time Scaling37

1-14.General Time-Scaling Proof43

1-15.Independent Variable Other than Time47

1-16.Solution of Simultaneous Differential Equations52

1-17.Approximate Differentiation on an Analog Computer62

1-18.Accuracy of Analog Computation63

Problems64

2.SIMULATION OF DISCONTINUOUS AND NONLINEAR PHYSICAL SYSTEMS71

2-1.Introduction71

2-2.Relays74

2-3.Diodes80

2-4.Arbitrary-Function Generators93

2-5.Function Multipliers96

2-6.Implicit Techniques of Function Generation112

Problems126

3.THE ROLE OF ANALOG COMPUTERS IN ENGINEERING ANALYSIS132

3-1.Introduction132

3-2.Analysis of a Rattrap133

3-3.Velocity Characteristics of a Paratrooper During Free Fall138

3-4.Dynamic Response of a Three-Story Building Subjected to an Earthquake145

3-5.Dynamic Response of a Thin Plate Subjected to a Blast Load153

3-6.Analysis of a Turbine Supply System162

3-7.Heat Dissipation in Space171

3-8.One-Dimensional Heat-Flow Analysis179

3-9.The Use of Dimensionless Equations in Analysis186

3-10.Real Roots of Polynomials191

Problems194

4.THE DIGITAL COMPUTER AND THE FORTRAN SYSTEM199

4-1.Introduction199

4-2.History of Digital Computers199

4-3.Digital-Computer Components201

4-4.Preparinga Digital-Computer Program203

4-5.Computer Sequence of Operations205

4-6.The FORTRAN System208

4-7.FORTRAN Statements211

4-8.The Elements of FORTRAN Language213

4-9.Constants213

4-10.Variables214

4-11.Subscripted Variables214

4-12.Operation Symbols215

4-13.Predefined Function Subroutines217

4-14.Arithmetic Statements218

4-15.Control Statements221

4-16.Input and Output Statements229

4-17.FORMAT Statements231

4-18.DIMENSION Statement236

Problems236

5.NUMERICAL METHODS FOR USE WITH THE DIGITAL COMPUTER241

5-1.Introduction241

5-2.Determining Real Roots of Algebraic and Transcendental Equations241

5-3.Solution of Simultaneous Linear Algebraic Equations262

5-4.Solution of Characteristic-Value Problems286

5-5.Numerical Integration and Differentiation303

5-6.Numerical Integration of Ordinary Differential Equations;Initial-Value Problems333

5-7.Numerical Solution of Ordinary Differential Equations;Boundary-Value Problems384

5-8.Numerical Methods for the Solution of Partial Differential Equations398

Problems432

INDEX453

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