²é¿´: 2361  |  »Ø¸´: 8
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

aa2349439

гæ (СÓÐÃûÆø)

[ÇóÖú] ÓÃMSÄ£ÄâÖУ¬ÓÃCOMPASSÁ¦³¡¼ÆËãAL2O3µÄÁ¦³¡£¬×ÜÊÇÕÒ²»µ½AL-OµÄ¼ü ÒÑÓÐ1È˲ÎÓë

ÎÒÔÚÓÃMS¼ÆËãAL2O3¿×µÀÖзÖ×ÓµÄÀ©É¢ÏµÊý£¬×Ô¼º½¨Á¢µÄAL2O3¾§°û£¬µ«ÊÇÓÃDISCOVER¼ÆËãµÄʱºò£¬ÓõÄCOMPASSÁ¦³¡£¬µ«ÊÇ×îС»¯µÄʱºò×ÜÊdzö´í£¬ÕÒ²»µ½AL-OÖ®¼äµÄ¼ü£¬ÇëÎÊÔõô½â¾ö£¬ÓÉÓÚ±¾ÈËÐÂÊÖ£¬Ï£ÍûÄܻشð¾ßÌåµã£¬Íò·Ö¸Ðл£¡

ÓÃMSÄ£ÄâÖУ¬ÓÃCOMPASSÁ¦³¡¼ÆËãAL2O3µÄÁ¦³¡£¬×ÜÊÇÕÒ²»µ½AL-OµÄ¼ü
AL2O3jpg
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹ØÉ̼ÒÍÆ¼ö: (ÎÒÒ²ÒªÔÚÕâÀïÍÆ¹ã)

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wjj318

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
7Â¥: Originally posted by ptyzsuhong at 2015-03-31 19:59:27
ÄãºÃ£¬ÇëÎÊÓÃÆäËûÁ¦³¡À´ÃèÊö½ðÊôÓë·Ç½ðÊôÖ®¼äµÄÀë×Ó¼üµÄʱºòҲҪɾ³ý¼üÂð£¿...

ûÓбØÒªÉ¾³ý°¡
8Â¥2015-04-28 10:40:07
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 9 ¸ö»Ø´ð

ÔÂÖ»À¶

Ö÷¹ÜÇø³¤ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Of these steps, assigning forcefield types and calculating charges are normally performed automatically, but in certain cases you may do this manually.

Forcefield typing uses predefined rules to assign a type to each atom in the structure. For example, a carbon atom in a benzene ring has a different forcefield type to that of one in an alkyl chain, as it will have different preferred geometric and energetic properties associated with it. When atoms are forcefield typed, the carbon atom in the benzene ring will be classified as c3a, whereas that in the chain will be c4. Typing the atoms allows the correct forcefield parameters to be used in determining the energies and forces for your particular system.

Usually, forcefield typing is performed automatically by Discover using the general rules of the typing engine, so manual forcefield typing is not required. However, in certain cases, one has to forcefield type the atoms manually to ensure they are set correctly.

In the case of ionic structures such as metal oxides, the bonds between the metal and the oxygen atoms are primarily ionic. This means that the concept of a covalent bond is not applicable to these structures and the bond must be deleted for the calculation to proceed. Conversely, the atoms must be bonded so that the forcefield typing engine can detect the environment of the atoms to predict the typing correctly. In these situations, you should use the typing engine in Discover to type the atoms and then remove the bonds before any calculations can be performed. Otherwise, Discover will look for bond parameters which do not exist.
MATLAB¡¢MSСÎÊÌâ¡¢ÆÕͨÎÊÌâÇë·¢ÌûÇóÖú£¡Ê±¼ä¾«Á¦ÓÐÏÞ£¬Ë¡²»½ÓÊÜÎÞ³¥Ë½ÐÅÇóÖú¡£
2Â¥2014-04-24 18:02:23
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

aa2349439

гæ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by ÔÂÖ»À¶ at 2014-04-24 18:02:23
Of these steps, assigning forcefield types and calculating charges are normally performed automatically, but in certain cases you may do this manually.

Forcefield typing uses predefined rules to a ...

лл£¬ÎÒÊÔÊÔ¿´£¡
3Â¥2014-04-25 08:49:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

syd3000

½ð³æ (ÕýʽдÊÖ)

˳±ãÇë½Ìһϣ¬MSÊÇÖ¸material studioÂð£¿
4Â¥2014-07-19 21:56:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[²©ºóÖ®¼Ò] ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8.O.55.1.O54,¿ÆÄ¿È«,¿ÉÙ¤¼± +3 DpSrDtM079iu 2026-08-22 5/250 2026-08-23 04:07 by OEbVnUOu01ol
[ÂÛÎÄͶ¸å] ÊÛSCIÒ»ÇøÎÄÕ£¬ÎÒ:8O5.5.1.O5.4,¿ÆÄ¿È«,¿ÉÙ¤¼± +3 2JOx3r2CYEgw 2026-08-22 4/200 2026-08-23 04:04 by OEbVnUOu01ol
[˶²©¼ÒÔ°] ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8.O.55.1.O54,¿ÆÄ¿È«,¿ÉÙ¤¼± +3 2JOx3r2CYEgw 2026-08-22 4/200 2026-08-23 03:55 by OEbVnUOu01ol
[˶²©¼ÒÔ°] ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8.O.55.1.O.5.4,¿ÆÄ¿È«,¿É+¼± +3 2JOx3r2CYEgw 2026-08-22 7/350 2026-08-23 03:55 by OEbVnUOu01ol
[˶²©¼ÒÔ°] ÊÛSCIÒ»ÇøÎÄÕ£¬ÎÒ:8O5.5.1.O5.4,¿ÆÄ¿È«,¿ÉÙ¤¼± +3 2JOx3r2CYEgw 2026-08-22 7/350 2026-08-23 03:43 by OEbVnUOu01ol
[ÂÛÎÄͶ¸å] ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8O.55.1.O.5.4,¿ÆÄ¿ÆëÈ«,¿É+¼± +3 2JOx3r2CYEgw 2026-08-22 6/300 2026-08-23 03:40 by OEbVnUOu01ol
[»ù½ðÉêÇë] 2026¹ú×ÔÈ»º¯ÆÀ·Ñµ½ÕË +11 ÑòÑü°å 2026-08-21 11/550 2026-08-22 22:03 by lsbin3733
[½Ìʦ֮¼Ò] Ìø²ÛºóÔÚÑÐÏîÄ¿Ôõô°ì£¿ +3 ¼òµ¥»¯xn 2026-08-22 7/350 2026-08-22 19:46 by ¼òµ¥»¯xn
[½Ìʦ֮¼Ò] ÊÛÒ»ÇøSCIÎÄÕÂT0P£¬ÎÒ:8O.551.O54,¿ÆÄ¿È«,¿ÉÊ®¼± +4 2JOx3r2CYEgw 2026-08-21 4/200 2026-08-22 16:52 by sunzitan
[»ù½ðÉêÇë] ½ñÌì»ù½ð»á³ö½á¹ûÂð£¿20260819 +16 kkkl_v 2026-08-19 17/850 2026-08-22 16:12 by °¢²¼Abu
[»ù½ðÉêÇë] ½ñÈÕ²»·Å°ñ£¿Íø´«¹ú×ÔȻԤ¼Æ 8 Ô 27 Èտɲé½á¹û +16 ҽѧÀÏÄк¢ 2026-08-20 20/1000 2026-08-21 21:13 by Ldrop2023
[»ù½ðÉêÇë] ¿ÆÑй¶ùÌ«ÄÑÁË +17 ÎÒ4´ó°×²Ë 2026-08-20 18/900 2026-08-21 20:57 by zhangev
[»ù½ðÉêÇë] ʱ¼ä´ÁÓÖ±äÁË +13 wuchongjun 2026-08-20 19/950 2026-08-21 17:21 by ×Ïɼ´¼
[»ù½ðÉêÇë] ÈÃÎÒÖÐÒ»¸öÃæÉϰɣ¡ +11 ´óƼ1987 2026-08-20 13/650 2026-08-21 14:48 by 20120902066
[»ù½ðÉêÇë] ¸Ð¾õÊÇÏÂÖܷŰñÁË +7 angus9576 2026-08-17 12/600 2026-08-21 13:38 by weiyin
[»ù½ðÉêÇë] ÎÒÃæÉÏÍêµ°ÁË +7 ÇÒÌý»¢Ð¥ 2026-08-20 8/400 2026-08-21 12:31 by ¿á¿áÄ«¾µ
[»ù½ðÉêÇë] Ó¦¸ÃÊÇÏÂÖÜÈý26ÈÕ¹«²¼Á˰ɣ¿ +4 ¹þ¹þ¸ò£¿ 2026-08-21 4/200 2026-08-21 10:58 by Vivilian
[»ù½ðÉêÇë] »ù½ð°¡»ù½ð +4 longfie172 2026-08-20 4/200 2026-08-21 08:58 by mark mao
[»ù½ðÉêÇë] ¹À¼ÆÊÇÖÜËÄ +3 archvillain 2026-08-18 3/150 2026-08-21 01:48 by jnhyjjm
[»ù½ðÉêÇë] ½ñÌì·Å°ñÂ𣿠+14 ²¼²¼ºÍÒ»¶þ 2026-08-19 15/750 2026-08-19 18:07 by gltch
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û