Tham khảo tài liệu 'sổ tay tiêu chuẩn thiết kế máy p27', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CHAPTER 23 BOLTED AND RIVETED JOINTS John H. Bickford Vice President Manager of the Power-Dyne Division Retired Raymond Engineering Inc. Middletown Connecticut SHEAR LOADING OF JOINTS ECCENTRIC LOADS ON SHEAR JOINTS TENSION-LOADED JOINTS PRELOADING OF BOLTS BOLT TORQUE REQUIREMENTS FATIGUE LOADING OF BOLTED AND RIVETED JOINTS PROGRAMMING SUGGESTIONS FOR JOINTS LOADED IN TENSION REFERENCES SYMBOLS AND UNITS A Ab A As Cross-sectional area in2 mm2 Cross-sectional area of the body of a bolt in2 mm2 Cross-sectional area of the body of the rivet in2 mm2 Cross-sectional area of the tensile stress area of the threaded portion of a bolt in2 mm2 Al A1 Ai etc. b Cross-sectional areas of individual fasteners in2 mm2 Number of shear planes which pass through the fastener and or the number of slip surfaces in a shear joint d E F Fb Fb Fornax Fby Fc Fc min F min Nominal diameter of the bolt in mm Modulus of elasticity psi MPa Force lb kN Tension in a bolt lb kN Primary shear force on a bolt lb kN Maximum anticipated tension in the bolt lb kN Tension in a bolt at yield lb kN Clamping force on the joint lb kN Minimum acceptable clamping force on a joint lb kN Minimum anticipated clamping force on the joint lb kN STANDARD HANDBOOK OF MACHINE DESIGN Fn Reaction moment force seen by the nth bolt in an eccentrically loaded shear joint lb kN Fra Fp max Fp min Fpr Ftr Average preload in a group of bolts lb kN Maximum anticipated initial preload in a bolt lb kN Minimum anticipated initial preload in a bolt lb kN Target preload lb kN Maximum external transverse load on the joint per bolt lb kN Fr FT mwC Fx Flt F2 F3 etc. External shear load on the rivet lb kN Maximum acceptable tension in a bolt lb kN External tension load on a joint lb kN Secondary shear or reaction moment forces seen by individual bolts in an eccentric joint lb kN H Distance between the centerline of the bolt holes nearest to the edge of a
