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Titlebook: Designing for Strength; Principles and Pract Peter Polak Textbook 1982Latest edition Peter Polak 1982 Aluminium.civil engineering.communica

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樓主: Gram114
11#
發(fā)表于 2025-3-23 11:11:36 | 只看該作者
12#
發(fā)表于 2025-3-23 15:53:38 | 只看該作者
Gabler Kompakt-Lexikon Logistikelop either the creative aspect or the knack of spotting weaknesses before they arise in the real object. This point is well illustrated by figure 1.1 showing a diesel engine connecting-rod design which failed in a direction that superficially seemed to be under very low stress.[1]
13#
發(fā)表于 2025-3-23 18:43:49 | 只看該作者
Klaus Bichler,Ralf Krohn,Peter Philippicimens. How do these relate to real needs in terms of size, shape, time factor, temperature, environment and (particularly) load fluctuation? What adjustments are needed to give valid predictions of performance?
14#
發(fā)表于 2025-3-23 22:30:42 | 只看該作者
15#
發(fā)表于 2025-3-24 05:18:38 | 只看該作者
Klaus Bichler,Ralf Krohn,Peter Philippidata and near full-size specimen tests. Weight as such is not critical. The pressure to economise, though laudable within limits, is aggravated by the custom of estimating cost for tendering purposes on a weight basis.
16#
發(fā)表于 2025-3-24 06:39:07 | 只看該作者
Gabler Kompakt-Lexikon Logistik need the ability to select efficient and safe structural solutions for a given duty. If we merely study analysis of standard cases we may fail to develop either the creative aspect or the knack of spotting weaknesses before they arise in the real object. This point is well illustrated by figure 1.1
17#
發(fā)表于 2025-3-24 14:11:11 | 只看該作者
18#
發(fā)表于 2025-3-24 16:02:27 | 只看該作者
19#
發(fā)表于 2025-3-24 21:22:46 | 只看該作者
Klaus Bichler,Ralf Krohn,Peter Philippiess due to this weight is something like 40 N/mm. on top of the duty stresses due to load, inertia and curvature. When we consider tethering a weather balloon, dredging samples from the sea bed or drilling deep holes, we need to consider tailoring the rope or drill pipe to the duty in more detail.
20#
發(fā)表于 2025-3-25 01:21:37 | 只看該作者
Klaus Bichler,Ralf Krohn,Peter Philippisses, deflection at the load points and very occasionally deflections elsewhere. Many students are taught to use Macaulay’s method and the three moment equation. These excellent methods have the following disadvantages: they do not aid a sense of structure, they are lengthy, errors are difficult to
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