← Notedeck
All engines
·
材料科学
en
zh-CN
zh-TW
ja
ko
fr
de
es
pt-BR
tr
it
ar
材料科学
6
engines
应力-应变曲线
Stress–strain curve
弹性区 σ=Eε · 屈服/抗拉/断裂 · 弹塑性判定
Elastic → yield → strain-hardening → necking → fracture, computed exactly
Hardness scales (Mohs / Vickers / Brinell / Rockwell C)
Hardness scales (Mohs / Vickers / Brinell / Rockwell C)
莫氏/洛氏/布氏/维氏 · 材料对比 · 跨标度换算
Locate a hardness on the Mohs reference scale and convert across metal scales
Atomic packing factor (APF) · crystal structures
Atomic packing factor (APF) · crystal structures
SC0.52/BCC0.68/FCC·HCP0.74 · 配位数 · a-r 关系
Pick a unit cell; the packing factor is computed live
疲劳 S–N(Wöhler)曲线
Fatigue S–N (Wöhler) curve
应力幅-循环数半对数 · 耐久极限 · Basquin
Stress amplitude vs cycles to failure · Basquin law · endurance limit for steel
热膨胀
Thermal expansion
ΔL=α·L0·ΔT · 线/面/体 · 双金属片弯曲
Linear ΔL = α·L0·ΔT · area 2α · volume 3α · bimetallic strip
杨氏模量与悬臂梁挠度
Young's modulus & cantilever deflection
δ=FL³/3EI · 刚度 k=3EI/L³ · 截面惯性矩
End-loaded cantilever · δ = F·L³/(3EI) · I = b·h³/12 · stiffness k