I Systems Microbiology(13 Lectures 7hece∥ as a we∥}- stirred boc/ nem/ca/ reactor Introduction 2 Chemical kinetics, Equilibrium binding, cooperativity L3 Lambda phage L4 Stability analysis L5-6 Genetic switches

Outline Structural Testing Why testing is important Types of Sensors, Procedures.... Mass, Static Displacement, Dynamics Test Protocol for 16.810 Explain protocol Sign up for time slots 16.810(16.682) Massachusetts Institute of Technology

16810(16682) Engineering Design and Rapid Prototyping Design optimization - Structural Design Optimization Instructor(s) Prof, olivier de Weck Dr. Il Yong Kim

Recall the definition of stress: o stress =\intensity of internal force at a point\ Figure 3.1 Representation of cross-section of a general body

Sources of Stresses and Strains Depends on type of structure Aircraft

As we've previously noted, we may often want to describe a structure in various axis systems. This involves... Transformations (Axis, Deflection, Stress, Strain, Elasticity Tensors) e.g., loading axes material principal axis Figure 7.1 Unidirectional Composite with Fibers at an Angle

Summarizing what we've looked at in elasticity, we have: 15 equations in 15 unknowns 3 equilibrium -6 strains -6 strain-displacement -3 displacements

The logical extension of discrete mass systems is one of an infinite number of masses. In the limit, this is a continuous system. Take the generalized beam-column as a generic representation:

Return to the simplest system the single spring-mass This is a one degree-of-freedom system with the governing equation

Previously saw (in Unit 19)that a multi degree-of-freedom system has the same basic form of the governing equation as a single degree-of-freedom system The difference is that it is a matrix equation