A moment-shear story model using the static condensation method is proposed for the steel frame with semi-rigid connections. Based on the superposition principle under small deformation, the story horizontal deflection can be divided into three parts, due to the action of story shears, the top story moment of column and the connection rotation of bottom story column, respectively. The formulas are derived for its lateral stiffness, horizontal deflection and height ratio of inflection point of column, taking into account the effect of semi-rigid connection. Numerical results indicate that this story model is reliable and can be used for preliminary design of this type of structures.
In this paper, hyper-elastic constitutive models of rubber material have been summed up based on constitutive relation and the Mooney-Rivlin model has been pay more attention. Then through the tension experimental test, data of sealing material under axial experimental are obtained, and M-R model parameters C10 and C01 are fitted by ANSYS. After obtaining the material parameters, compression deformation behavior and the distribution of stress field and resilience behavior of the seal ring are simulated by using ANSYS/LS-DYNA software under different loading conditions.
Coupled resonant optical waveguide (CROW) gyroscope is an important type of integrated optical gyroscope based on Sagnac effect. However, the traditional CROW design method relying on empirical adjustment of parameters is deficient in achieving its best capability and the poor Sagnac effect of micro-scale devices leads to unsatisfactory performance of integrated devices. Therefore, the present study proposes a new approach to design CROW gyroscope by applying intelligent optimization algorithm(PSO: particle swarm algorithm) to design CROW gyroscope. Three aspects of work will be explored: Fristly, a new evaluation index is proposed to evaluate the efficiency of integrated optical gyroscope area utilization(EGA); Secondly, The performance limits for different losses and the accuracy limits and related parameters that can be achieved by increasing the resonator area at different losses are also explored. Finaly, we designed theoretical performance(The angle random walk) up to 29.1𝑑𝑒𝑔/√ℎ and only 1mm × 1mm in size.
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