This 90 minutes lecture to be delivered via telelink addresses a class of mit undergraduates unrolled in Engineering Design and Rapid prototyping Course. The students have been introduced to the basic optimization concepts of design variables design space, objective function, constraints and numerical search methods. Building on this elementary basis, the purpose of the lecture is to make the students aware of a reaud range of theoretical and practical issues that arise when optimization is applied in real-life engineering. To that end a gamut of topics is presented with emphasis on the qualitative exposition rather than in-depth mathematics. The topics include

Need to study structural mechanics to design properly to prevent failure There is no doubt that any of the disciplines of Aeronautics and Astronautics can contribute to an accident -engine failure -etc. But, the vast majority of non-human induced accidents is due to structural

FEM fundamental concepts analysis procedure Errors mistakes, and accuracy Cosmos Introduction(ca 30 min) Follow along step-by-step Conduct Fea of your part( ca 90 mi Work in teams of two First conduct an analysis of your CAd design You are free to make modifications to your original model

IG Aln Happy New Year 2004 UHF ndio REM telecom HW \ Front SSPA Mars Rovers mEr-a \ Spirit landed Sat 1/3 11 35pm ET Body structure (Warm Electronics BoxWeb).Refhttp://marsrovers.jplnasagov (imAgeistakenfromNasa'SWebsitehttp://www.nasa.gov.) We won' t be designing a mars rover this iap, but You will learn about the design process and fundamenta

The work of the external forces in the spring system of the figure is given by W=B*(U1+U2+U3)(2) W=P1*U1+P2米U2+B米U3(3) None of the above statements

Wrapping up E coli chemotaxis (L7& L8) Main points of last 2 lectures L7: Biological background what is the function of the individual molecules L8: modeling of all possible chemotactic reactions why doesn't this model reproduce experimentally observed perfect adaptation

For the potato-shaped body given in class to explain the concept of stress, the field of stress vectors t(n)=t(n)(x)on the plane of normal n given by its cartesian components(1,0, 0) known and its cartesian components are given by the expression

The state of stress at a point is completely determined when: 1. the stress vectors on three different planes are specified 2. the stress vectors on two different planes are speciale 3. the stress vectors one arbitrary plane is spec-

BE.410 Spring 2003-Lecture 21 Image removed due to copyright considerations Figure 1 and 2 in Evans, E and A. Yeung Cortical shell-liquid core model for passive flow of liquid-like spherical cells into micropipets Biophysical Journal 56(1): 139-49 July 1989) 和以81mh(m41m如) era rgion incid Arie /dorms a

A Cauchy stress component at a given(fixed) point P of a structure in equilibrium under the action of external loads is defined when 1. the direction of the face on which the stress component acts is specified 2 the direction of the force from which the stress component is derived is specified None of the above statements