What are the failure modes of a rivet joint?

The three main failure modes are: (1) Rivet shear — rivets fail in shear across their cross-section, (2) Bearing failure — the rivet crushes into the plate material, and (3) Plate tear-out — the plate tears between rivet holes or from the edge.

How is rivet shear strength calculated?

Rivet shear capacity = n × (π/4) × d² × τ_allow, where n is number of rivets, d is rivet diameter, and τ_allow is allowable shear stress of the rivet material (typically 0.6 × tensile strength).

What is bearing failure in a riveted joint?

Bearing failure occurs when the rivet crushes into the plate material. Bearing capacity = n × d × t × σ_bearing, where t is the thinner plate thickness and σ_bearing is the allowable bearing stress (typically 1.5–2.0 × tensile strength).

How do I calculate plate tear-out strength?

Tear-out (net section failure): P_tear = (w - n_row × d) × t × σ_tensile, where w is plate width, n_row is number of rivets in the critical row, d is hole diameter, and t is plate thickness.

What is the efficiency of a riveted joint?

Joint efficiency = minimum(shear capacity, bearing capacity, tear-out capacity) / (plate strength without holes). Typical efficiencies range from 50% to 85% depending on the pattern.

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鉚接接頭強度計算器

計算鉚接接頭在剪力、承載及板材撕裂失效模式下的承載能力。輸入鉚釘尺寸、數量、板材厚度及材質。

剪力承載撕裂

結果

接頭承載力（控制值）

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鉚釘剪力承載力

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承載承載力

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板材撕裂

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接頭效率

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鉚釘剪力

承載

板材撕裂

控制值（最低值）決定接頭承載力。

⚠️ 設計時請對這些極限承載力施加安全係數（通常為 2–3）。

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