Author: Rushton, JA
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Professor F.W. Williams (F) (University of Wales, Cardiff) The authors’ advocacy of the use of the curve length method in finite element analysis is most interesting and they have kindly called attention to the writer’s previous use of this method to obtain analytical solutions4. The writer’s solutions included experimental comparisons for a spaceframe dome as well as two toggles. The object of this correspondence is to comment briefly, to try to improve the authors’ already excellent use of one of the writer’s toggles, as the basis of all their comparisons of results.
The Hope problem Readers have clearly found Mr Hope's problem, Verulam, Vol. 73 N0.22, 21 November 1995, interesting and we have had two different types of solution - one assuming lateral forces and the other not. As the methods adopted to find a solution have varied, Verulam has given fuller details of each. Geoffrey Pinfold from London, has sent the following: The problem reminded me to try the influence coefficient taught at university in 1960 and not seen in many textbooks. The ‘grey matter’ still worked after 35 years and my solution enclosed. I hope it is correct! Verulam
Sometime over the weekend of 7 and 8 March 1987, part of the charging ramp to the famous Darby furnace at Coalbrookdale collapsed. Subsequent investigations revealed that other parts of the structure were also very unstable, and they were temporarily shored. R. Dixon