Curs 1 Flashcards

1
Q

Tensorul tensiunilor

Notatie si elemente

A

τ indice zy
unde:
* y=directia de actiune
* z=directia normalei la planul de actiune

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2
Q

Notatii

deplasari si deformatii

A

Deplasari: u, v, w
Deformatii: εx, εy, εz, Yxy, Yyz, Yxz

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3
Q

Relatia deformatiei specifice

A

{ε}=[B]{δ(x,y,x)}
[B]=matrice deplasarilor

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4
Q

Definitie si formula

Rigiditatea

A

Rigiditatea=opusul elasticitatii
Formula: F=R*u;
unde, R=rigidiate aparte

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5
Q

MEF: definitie; Ce este discretizarea?

Metoda elementului finit

A

MEF= se bazeaza pe discretizare
Discretizarea = impartirea domeniului in elemente mici

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6
Q

Definitie; Scop

Functia de forma simpla de simpla de ordin inferior

A

Este fct folosita pt a descrie comportamnetul interior al fiecarui element

Scop: Determinarea deplasarilor si a fortelor din elemente

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7
Q

Definitie

Nodurile

A

Locul unde se leaga elementele si locul in care se definesc deplasarile si fortele

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8
Q

Cate DOF sunt? Tip & Notatiil

DOF

A

Exista 6 DOF:
* translatii: u,v,w
* rotatii: x,y,z

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