Book Handbook of Mechanical Engineering Calculations ar Episode 2 phần 3

Công nghệ cơ khí thường tạo ra các giả lập mô phỏng hoạt động của các đối tượng, như quy trình chế tạo thực tế theo trình tự tối ưu hóa sự thực hiện, hiệu quả kinh tế và chi phí năng lượng trước khi quyết định lựa chọn một thiết kế cụ thể. | Source HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS SECTION 23_ SPRING SELECTION AND ANALYSIS Proportioning Helical Springs by Minimum Weight Determining Safe Torsional Stress for a Helical Spring Designing a Spring with a Specific Number of Coils Determining Spring Dimensions Before and After Load Applications Analysis and Design of Flat Metal Springs Sizing Torsional Leaf Springs Designing a Spring to Fire a Projectile Spring Support of Machinery to Control Vibration Forces Spring Selection for a Known Load and Deflection Spring Wire Length and Weight Helical Compression and Tension Spring Analysis Selection of Helical Compression and Tension Springs Sizing Helical Springs for Optimum Dimensions and Weight Selection of Square- and Rectangular- Wire Helical Springs Curved Spring Design Analysis Round- and Square-Wire Helical Torsion- Spring Selection Torsion-Bar Spring Analysis Multirate Helical Spring Analysis Belleville Spring Analysis for Smallest Diameter Belleville Spring Computations for Disk Deflection Load and Number Ring-Spring Design Analysis Liquid-Spring Selection Selection of Air-Snubber Dashpot Dimensions Design Analysis of Flat Reinforced- Plastic Springs Life of Cyclically Loaded Mechanical Springs Shock-Mount Deflection and Spring Rate PROPORTIONING HELICAL SPRINGS BY MINIMUM WEIGHT The detent helical spring in Fig. 1 is to be designed so that force P1 for the extended condition is to be 20 lb N . After an additional compression of in cm the shearing stress in the spring is to be 75 000 lb in2 517 MPa . The spring index c is approximately 8 based on past experience and the modulus of elasticity in shear is 11 500 000 lb in2 GPa . Find the diameter of the wire helix radius and number of active coils for the smallest amount of material in the spring. Calculation .