Evaluate number o independent elastic constants for orthorhombic and tetragoal lattice systems.
Evaluate number o independent elastic constants for orthorhombic and tetragoal lattice systems.
C-centered Bravais lattices exist in the monoclinic and orthorhombic systems but not in the tetragonal system. That is because the C-centered tetragonal lattice is equivalent to one of the other Bravais lattices. Which one is it? Show with a drawing how that lattice is related to the C-centered tetragonal lattice. How many atoms are in the unit cell of that lattice?
Suppose you have a very small sample of the orthorhombic crystal (orthorhombic, lattice constants 5.3 Å, 5.4 Å and 5.5 Å). The crystal is 53 nm x 54nm x 55 nm oriented along the respective axis. [2] Show for this crystal, there are one million atoms. [2] If the crystal has dimensions 53nmx54nmx55nm, calculate the smallest and largest phonon wave vectors for this crystal (state answer in mks). [2] What exactly is a phonon and why do we use them? [2]...
ME 2331, EXAM-2 Lattice rammebe o 404 n )Determine the interplanar spacing and the length of the Burgers vector for slip on the expected slip systems in FCC aluminum. Repeat, assuming that the slip system is a (110) plane and a IITIldirection. What is the ratio between the shear stresses required for slip for the two systems? Assume k-2. 02
ME 2331, EXAM-2 Lattice rammebe o 404 n )Determine the interplanar spacing and the length of the Burgers vector for...
15. In BZ(I) of the ID monatomic lattice (a) the number of normal modes is equal to the number of the allowed values of (b) the group velocity increases with increasing a (c) the vibrational motions of the atoms are equivalent (a) , and -correspond to the same normal mode 16. A transverse elastic wave is travelling in a continuous medium in 1D. For this wave (a) the velocity depends on Young's modulus (b) the density of states is constant...
2. There are two PD control-systems as shown in Fig. 2. Assuming time constants (T 1/???) are 2 (sec) and the damping ratios (3) are 1 (a) Find ?(s)s of the PD control-systems by using Ta and a, (b) Evaluate the values for Kp and KD for each system. (c) Compute the errors for each system with the ramp input (a,-1/s2) and the zero disturbance (Td0) (d) As the input is the unit-step input and the disturbance is zero, compare...
O SYSTEMS AND MATRICES Classifying systems of linear equations from graphs from both sides of System B System System A Line 11 y=-2x+5 Line 11 yx+4 Line 1: Line 2: y=x-1 Line 2:y2-4 Line 2: x+2y-6 ms that don't con Tap oblem. This system of equations is. inconsistent O consistent dependent consistent independent This system of equations is inconsistent consistent dependent consistent independent TNS means the system has: [ - This system of equations is: inconsistent O consistent dependent O...
Problem 4: [12 points] There are two systems, each consisting of a large number of interacting atoms. For system 1 the entropy as a function of energy is S,-AE1/2, while for system 2 we have S,-BEV4 Here A and B are constants. The two systems are now placed in thermal contact, and allowed to reach equilibrium. a) [6 points Evauate E2 as a function of A, B, and E1 b) [6 points] What is the heat capacity of system 1...
m Review Constants Periodic Table Tendons are, essentially, elastic cords stretched between two fixed ends, as such, they can support standing waves. These resonances can be undesirable. The Achilles tendon connects the heel with a muscle in the calf. A woman has a 20-cm-long tendon with a cross-section area of 120 mm . The density of tendon tissue is 1100 kg/m2 Part A For a reasonable tension of 000 N. what will be the fundamental resonant frequency of her Achilles...
what is the answer for domain and range?
Evaluate the function at the given value(s) of the independent variable. 3x + 2,x <0 3x + 6, x 2 0 f(x)- (b) o)6 f(2)=112 (c) Find the domain and range. (Enter your answers using interval notation domain range Need Help? 1mReaditenǐTalktont1 Submit Answer Save Progress Practice Another Version ) Tvpe here to search
Evaluate the function at the given value(s) of the independent variable. 3x + 2,x
There are a number of independent security assurance and certification programs. Each claims to be the best in the industry and suggests that its certification allows companies and individuals to place a level of trust in the systems and practices. Can any security certification or assurance program guarantee a high level of success in ensuring security? Discuss the problem, if any, of multiple security schemes and certification bodies. You may also want to consider the issue of mandatory certification, especially...