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In shipping production to ship partial strength test, empirical formula is very convenient to use, but under the condition of loading heavy only commonly used empirical formula is adopted to improve the check appears too simple, lack of accuracy; Ships mostly adopt the method of finite element analysis during the design phase, the stress in the hull structure of utmost precision of the calculation, but huge computation, high requirements for hardware, expensive cost, using the theory is relatively difficult, difficult to require the crew to grasp, it also determines the method cannot be used in shipping industry. How to do is to ensure the safety of ship operation, and to maximum full play the ship loading ability, is the owner, the owner, classification society and the common concerns of port authorities. Based on the detailed analysis of the major pieces of cargo transport in the hull, after the local structure characteristics and internal stress distribution of trying to adopt a more simple way, to realize the local strength of hull inspection both to guarantee accuracy, while avoiding expensive and tedious calculation process, and calculating examples are given to prove the validity of this method.
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