Page 70 - index

ɋɨɧɞɵԕɬɚɧ ɛɿɪ ɠɚɡɵԕɬɵԕɬɚ ɠɚɬɩɚɣɬɵɧ, ɛɿɪ-ɛɿɪɿɦɟɧ ɩɚɪɚɥɥɟɥɶ ɤԛɲɬɟɪ
ɠԛɣɟɫɿ ԛɲɿɧ ɬɟɤ ԛɲ ɬɟɩɟ-ɬɟԙɞɿɤ ɲɚɪɬɬɚɪɵ ɛɨɥɚɞɵ. Ɉɥɚɪ:

¦ ¦ ¦Fiz 0 , M x (Fi ) 0 ɠԥɧɟ M y (Fi ) 0 . (41)

ȿɝɟɪ ɛԝɥ ɲɚɪɬɬɚɪ ɬɟԙɞɟɭɥɟɪɿɧɿԙ ɿɲɿɧɞɟ ɛɟɥɝɿɫɿɡ ɲɚɦɚɥɚɪ ɛɨɥɫɚ, ɨɧɞɚ
ɛԝɥɚɪ ɛɿɪ ɠɚɡɵԕɬɵԕɬɚ ɠɚɬɩɚɣɬɵɧ ԧɚɪɚ ɩɚɪɚɥɥɟɥɶ ɤԛɲɬɟɪɞɿԙ ɬɟɩɟ-ɬɟԙɞɿɤ
ɬɟԙɞɟɭɥɟɪɿ ɞɟɩ ɚɬɚɥɚɞɵ. Ⱦɟɦɟɤ, ԧɡɚɪɚ ɩɚɪɚɥɥɟɥɶ ɤԛɲɬɟɪ ԥɫɟɪ ɟɬɿɩ ɬԝɪԑɚɧ
ɟɪɤɿɧ ԕɚɬɬɵ ɞɟɧɟ 41-ɲɚɪɬɬɚɪɞɵ ԕɚɧɚԑɚɬɬɚɧɞɵɪɚɬɵɧ ɛɨɥɫɚ, ɨɧɞɚ ɦԝɧɞɚɣ
ɞɟɧɟ ɬɟɩɟ-ɬɟԙɞɿɤ ɤԛɣɞɟ ɛɨɥɚɞɵ.

§7. ȿɪɤɿɧ ɟɦɟɫ ԕɚɬɬɵ ɞɟɧɟɧɿԙ ɬɟɩɟ-ɬɟԙɞɿɤ ɲɚɪɬɬɚɪɵ
ȿɪɤɿɧ ɟɦɟɫ ɞɟɧɟɧɿԙ ɛɚɣɥɚɧɵɫɬɚɪɵɧ ɚɥɵɩ ɬɚɫɬɚɩ, ɨɥɚɪɞɵ ɪɟɚɤɰɢɹɥɚɪɦɟɧ
ɚɥɦɚɫɬɵɪԑɚɧɧɚɧ ɤɟɣɿɧ, ɛԝɥ ɞɟɧɟɧɿ ɟɪɤɿɧ ɞɟɧɟ ɪɟɬɿɧɞɟ ԕɚɪɚɫɬɵɪɭԑɚ ɛɨɥɚɞɵ.
Ȼԝɥ ɤɟɡɞɟ, ɛɟɥɫɟɧɞɿ ɤԛɲɬɟɪɞɟɧ ɠԥɧɟ ɪɟɚɤɰɢɹɥɚɪɞɚɧ ɬԝɪɚɬɵɧ ɤԛɲɬɟɪ ɠԛɣɟɫɿ
ɬɟɩɟ-ɬɟԙɞɿɤ ɲɚɪɬɬɚɪɵɧ ԕɚɧɚԑɚɬɬɚɧɞɵɪɚɞɵ.
Ⱦɟɧɟɧɿԙ ɬɟɩɟ-ɬɟԙɞɿɝɿɧɿԙ ɠɟɤɟɥɟɧɝɟɧ ɟɤɿ ɬԛɪɿɧ ԕɚɪɚɫɬɵɪɚɦɵɡ. Ɉɥɚɪ:
ɚ) ɞɟɧɟɧɿԙ ԕɨɡԑɚɥɦɚɣɬɵɧ ɟɤɿ ɧԛɤɬɟɫɿ ɛɚɪ, ɚɥ ɞɟɧɟ ɨɫɵ ɟɤɿ ɧԛɤɬɟ ɚɪԕɵɥɵ
ԧɬɟɬɿɧ ɨɫɶɬɿ ɚɣɧɚɥɚ ԕɨɡԑɚɥɚ ɚɥɚɞɵ.
Ԕɚɬɬɵ ɞɟɧɟɧɿԙ ԕɨɡԑɚɥɦɚɣɬɵɧ ɟɤɿ ɫɮɟɪɚɥɵԕ B ɠԥɧɟ A ɬɨɩɫɚɥɚɪɵ ɛɨɥɫɵɧ.
Ɉɥɚɪ ɛɿɪ-ɛɿɪɿɧɟɧ h ԕɚɲɵԕɬɵԕɬɚ ɨɪɧɚɥɚɫɫɵɧ (67-ɫɭɪɟɬ).
Ⱥɬɚɥԑɚɧ ɬɨɩɫɚɥɚɪɞɵ ɚɥɵɩ ɬɚɫɬɚɩ, ɨɥɚɪɞɵ, ԥɪ ɬɨɩɫɚ ԛɲɿɧ, ԛɲ-ԛɲɬɟɧ
ɪɟɚɤɰɢɹɥɚɪɦɟɧ ɚɥɦɚɫɬɵɪɚɦɵɡ. Ɋɟɚɤɰɢɹɥɚɪ: B ɬɨɩɫɚɫɵɧɞɚԑɵ – B1, B2 , B3

ɠԥɧɟ A ɬɨɩɫɚɫɵɧɞɚԑɵ – A1, A2 , A3 . Ɉɫɵ ɪɟɚɤɰɢɹɥɚɪ ɠԥɧɟ ɛɟɪɿɥɝɟɧ ɛɟɥɫɟɧɞɿ

oo o
ɤԛɲɬɟɪ F1 , F 2 ,..., F n ɞɟɧɟɧɿԙ ɬɟɩɟ-ɬɟԙɞɿɝɿɧ ԕɚɦɬɚɦɚɫɵɡ ɟɬɟɞɿ. ɋɨɧɞɵԕɬɚɧ:

¦ Fix A1 B1 0, ¦ M x (Fi ) B2 ˜ h 0,

¦ Fiy A2 B2 0, ¦ M y (Fi ) B1 ˜ h 0,

¦ Fiz A3 B3 0, ¦ M z (Fi ) 0.

67-ɫɭɪɟɬ

68