Plastisk deformation Flashcards

1
Q

Wy (total arbete)

A

Wy = Wi + Ws + Wfr

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2
Q

Wi

A

ideala arbetet

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3
Q

Ws

A

Skjuvarbetet

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4
Q

Wfr

A

Friktionsarbetet

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5
Q

Ludwiks ekvation

A

kf = K * Φ^n

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6
Q

Smideskraft

A

F = pm * A

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7
Q

kf,medel

A

kf,medel = K * Ømedel^n

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7
Q

Arbete vid sänksmide (Wy_sänk)

A

Wy = (Cform/2) * Wi

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7
Q

Ømedel

A

abs( ln(A0/Aproj) )

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8
Q

Kraft sänksmide (Fsänk)

A

Cform * kf,medel * Aproj

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9
Q

Teknisk spännig (s)

A

s = F/A0

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10
Q

Sann spänning (σ)

A

σ = F/A

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11
Q

Teknisk töjning (e)

A

e = Δl/l0

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12
Q

Sann töjning (ε)

A

ε = ln(l/l0)

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13
Q

Lagen om konstant volym

A

ε1 +ε2 + ε3 = 0

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14
Q

Klippkraft

A

F = k_sk * A

15
Q

specifika klippkraften (k_sk)

A

k_sk=0.8 * σb

16
Q

Gradsax klippkraft

A

F = k_sk (t^2/2tan(B))