Neither the Maxwell nor Kelvin model adequately describes the behavior of some common engineering materials, such as asphalt concrete. However, the Max- well and the Kelvin models can be put together in series, producing the Burgers model, which can be used to describe simplistically the behavior of asphalt concrete. As shown in Figure 1.13, the Burgers model is generally drawn as a spring in series with a Kelvin model in series with a dashpot. The total deformation at time t, with F M, M2 82 B2 | 82 B3 FIGURE 1.13 Burgers model of viscoelastic materials.

Neither the Maxwell nor Kelvin model adequately describes the behavior of some common engineering materials, such as asphalt concrete. However, the Max- well and the Kelvin models can be put together in series, producing the Burgers model, which can be used to describe simplistically the behavior of asphalt concrete. As shown in Figure 1.13, the Burgers model is generally drawn as a spring in series with a Kelvin model in series with a dashpot. The total deformation at time t, with F M, M2 82 B2 | 82 B3 FIGURE 1.13 Burgers model of viscoelastic materials.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

2. (a) Define Biot-Savart’s law with the equation. (b) Define Lenz’s Law.
16 If permittivity E is independent of the magnitude of E, then the material is said to be because D andE are related linearly, and if it is independent of the direction of E, the material is said to be non linear, linear linear, isotropic isotropic, linear conservative, linear isotrpic, ideal
I need the answer as soon as possible
3. a) List and describe the suggestions of two major assumptions of the lumped capacitance method. b) For quick response of a thermocouple to observe varying temperature of fluids which one of the following suggestions is correct. Explain your answer by giving the reasons. )Diameter must be large i) surface heat transfer coefficient must be large Bi <0.1 iii)material specific heat must be large iv)material density must be large
Complete the sentence! The strength of the magnetic field satisfies ... - Faraday's law of induction. - Ohm's law. - the law of Biot and Savart. - Kirchhoff's first law.
Explanation: The given statement is half true as steady current can generate the magnetic field but other half is false as the global charge conservation law is also obeyed by steady current. The steady current is the constant flow of charge in an electric wire. As moving charges always generates magnetic field in the neighborhood space. The global charge conservation law states that the total charge is conserved in an isolated system. Steady currents have to obey the law of charge conservation. Consider some region of space completely enclosed by the balloon-like surface S. The surface integral of J over all of S gives the rate at which charge is leaving the volume enclosed. Now if charge forever pours out of, or into, a fixed volume, the charge density inside must grow infinite, unless some compensating charge is continually being created there. But charge creation is just what never happens. Therefore, for a truly time- independent current distribution, the surface integral of J…
Pr1. A metal rod having a mass m and length e has resistance R. The rod hangs from two vertical metallic wires of length l in a uni- form vertical magnetic field B of a horseshoe magnet (see figure). The wires have negligib- le resistance. An AC voltage source is connec- ted between the wires which provides a voltage U(t) = Uo cos wt, where Uo and w are constants. U(t) S m IN a) Show that for small angular displacements p the motion of the rod can be described by the cquation U (t) = aö + Bộ + VP, and express the constants a, 3, y in terms of quantities m, l, B, R and the gravitational ac- celeration g. b) At a certain frequency w = wo the ampli- tude of the oscillations of the rod becomes large and the equation above does not describe the motion anymore. Estimate the frequency wo.
A mild street ring having across sectional area of 600 sq mm and a mean circumference of 500 mm has a coil of 300 turns uniformly around it. Calculate the reactance at the ring and the current required to produce a flux of 800 uwb in the ring. If the relative permeability is 400.
Considering two parallel coupled coils such that the fluxes produced by the coils act in the same direction, then derive the expression for equivalent inductance of the parallel combination.
V emf Iron core with The transformershown consists of a long wire coincident with the z-axis and carrying a current I = Io coswt, coupling magnetic energy to a toroidal coil situated in the x-y plane and centered at the origin. The toroidal coil uses iron material with permeability µ. The tightly wound coil of N turns serves to induce voltage Vemf as shown in the figure. a. Develop an expression for Vem f b. Calculate Vem f for N = 100, f = 60 Hz, μ = 4000μo, a = 5 cm, b=6 cm, c = 2 cm, and Io = 50 A
ّ
Q4. The equation relating the current in a circuit with time is i=282.1 sin377t, where the current is measured in amperes and the time in seconds. Find the values of: The r.m.s current The frequency The instantenous value of the current when t=2.0ms