Bending stress measuring method of fixed structure, record media and computer

摘要

Topic Being simple, at the same time the record media which records the program which runs bending stress measuring method and that manner which can measure also local stress precisely and the computer which runs its manner are offered. SolutionsThis invention computes the offset distance to neutral axial position from fixed structural body surface and operation the length of the neutral axis making use of the distance value of the angular or measurement interval which was seen from measurement standard position (S2), this observation range measurement process (S1) with by adding to the observation distance value which is obtained, (S3), operation the initial position of the neutral axis in a state where outer forces are not operation from size of position and the early curvature which correspond to the sum total value of length of the neutral axis, calculates the displacement tonnage, (S5), differentiating the displacement tonnage, the change tonnage of curvatureThe request (S8), multiplying the stiffness coefficient and geometrical moment of inertia of the fixed structure in this, bending moment calculation it does, it obtains stress intensity by dividing with section modulus, (S10). Furthermore, the external load is calculated from relation of the equilibrium of power and the moment in the minute part on the neutral axis (S12). Choice figure Drawing 2