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Bruhn - Analysis And Design Of Flight Vehicles Structures Episode 1 Part 9

Tham khảo tài liệu 'bruhn - analysis and design of flight vehicles structures episode 1 part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | ANALYSIS AND DESIGN OF FLIGHT VEHICLE STRUCTURES AS. 43 Influence coefficients Ans 1 21.8 27.2 27.5 18.3 Re-solve the 27.2 27.5 13.3 68.5 65.4 26.4 65.4 68.4 26.2 26.4 26.2 20.6 Ubly redundant beam or Example Problem B page A8.3 by matrix methods. The redundant reactions should be given ftq symbols. See Example Problem 13a page A8.20 . 13 Re-solve Example Problem 5 page A8.12 by matrix methods. For simplicity make your choice of generalized forces Including those designated as X and Y in the example so that Figs. A8.21 and A8.22 can be used to give the gỉr loadings. 14 By matrix methods re-solve Example Problem 4 p. AS.12 using 3 equal bay divisions along the panel 3 times redundant . Use the same structural dimensions as In Example Problem 20 p. AS.36. Compare the results with those obtained from the formulas developed m Example Problem 4. 15 Show that the matrix equation eq. 21 Is modified to cover the Initial stress problems of Art. AS.8 by writing jjrsj QsJ - ậrn n ESrll where At Is the Initial Imperfection associated with force Qj. Refer to the argument leading to eq. 11 of Art. A8.8. 16 Using the equation of problem 15 above re-solve Example Problem 6 p. AS.14. 17 Using the equation of problem 15 above re-solve Example Problem 7 p. AS.14. 18 Using the matrix methods of Art. A8.13 re-solve Example Problem 9 p. AS.15. 19 For the doubly symmetric four flange box beam of Example Problem 15 p. AS.24 determine the redundant stresses q q and qia if one flange Is heated to a temperature T uniform spanwise above the remainder of the structure. Ans. 2081 J 1599 741 I REFERENCES. See references at the end of Chapter A-7. Douglas DC 8 airplane. Photograph showing simulated aerodynamic load being applied to main entrance door of fuselage test section. A8. 44 STATICALLY INDETERMINATE STRUCTURES PROOF TEST OF DOUGLAS AIRCRAFT MODEL DC-6 DOUGLAS DC-8 AIRPLANE. An outboard engine pylon mounted on a section of wing for static and Rutter tests. The steel box represents the .