h-section การใช้

• Specification for h - section steel arches for use in mines
• Transfer matrix method of internal force analysisof tapered h - section steel beam
• Analysis on the elastic stability of elastic restraints for h - section steel beams
• Technical condition of h - section steel rigid suport in ladder - shape used in coal mine
• The welded steel h - section
• Experimental and theoretical research on in - plane stability capacity of h - section aluminum beam - columns
• In recent years , with the production of homemade h - section steel members , the above - mentioned factors have been well improved
• Wp = 6 > the practical table is compiled that integral stability coefficient of homemade rolled h - section steel beam under constant moment
• The suggestion is put forward that adopting the different geometry control condition between rolled h - section steel beam and general i - section steel beam
• Based on the gb50017 code , the geometry control condition of integral stability capacity of homemade rolled h - section steel beam is conservative excessively and is modified accordingly
• It is indicated that the result , based on the gb50017 code , is appropriate during the elastic integral stability range and is conservative excessively during the inelastic integral stability range , for homemade rolled h - section steel beam
• Integral stability capacity of rolled beam is more 10 % ~ 20 % than welded beam . at the same time , the inelastic integral stability capacity of wild rolled h - section ( hw ) steel beam is more superior observably than hn steel beam
• The integral stability capacity for homemade rolled h - section steel beam and the applicability of the design code ( gb50017 ) are analyzed entirely in the paper . it gives a chance to master and popularize homemade rolled h - section steel
• But at present , the study on homemade h - section steel members are far from perfect . based on this status , the in - plane stability capacity for homemade rolled h - section steel columns under eccentric load is analyzed in this paper
• Taking account of the simplified torsion moment of inertia , integral stability coefficient increase relatively 5 % or 0 . 01 ~ 0 . 03 absolutely , only for narrow rolled h - section ( hn ) behind hn350 175 , whose calculation length goes beyond the limit of 8 meters
• Based on compensation control thought , through using neural network pid controller as compensation tache of traditional pid controller , a kind of hybrid pid controller is designed . combined with neural network , self - tuning control can realized better control over non - linear system . utilizing the advantages of fuzzy control and neural network control , a kind of neural network adaptive fuzzy controller based on fast bp algorithm is presented and it may control the plant on line . at last , the hybrid pid controller is applied in tension system of h - section continuous rolling mills and tension - free control is realized . the simulation results show that it has better performance than traditional pid controller . at the same time , it provides some reference for the control of other similar systems