基于边界元的微型轿车进气消声器消声性能分析计算（本科毕业论文设计）.doc
约53页DOC格式手机打开展开
基于边界元的微型轿车进气消声器消声性能分析计算（本科毕业论文设计）,»ùÓڱ߽çÔªµÄ΢Ðͽγµ½øÆøÏûÉùÆ÷ÏûÉùÐÔÄÜ·ÖÎö¼ÆË㣨±¾¿Æ±ÏÒµÂÛÎÄÉè¼Æ£©ÕªÒªËæ×ÅÆû³µÔëÉù¿ØÖƼ¼ÊõµÄ·¢Õ¹£¬½øÆøÔëÉùÒѳÉΪÆû³µÔëÉù¿ØÖƵÄÖص㡣±¾Îļòµ¥½éÉÜÁ˽øÆøÏûÉùÆ÷µÄÑÐ...
内容介绍
此文档由会员 cglina 发布
»ùÓڱ߽çÔªµÄ΢Ðͽγµ½øÆøÏûÉùÆ÷ÏûÉùÐÔÄÜ·ÖÎö¼ÆË㣨±¾¿Æ±ÏÒµÂÛÎÄÉè¼Æ£©
Õª Òª
Ëæ×ÅÆû³µÔëÉù¿ØÖƼ¼ÊõµÄ·¢Õ¹£¬½øÆøÔëÉùÒѳÉΪÆû³µÔëÉù¿ØÖƵÄÖص㡣±¾Îļòµ¥½éÉÜÁ˽øÆøÏûÉùÆ÷µÄÑо¿ÓëÓ¦ÓõÄÏÖ×´£¬²ûÊöÁ˽øÆøÔëÉùµÄ²úÉú»úÀí¼°Æä»ù±¾ÀíÂÛ£¬Ñо¿Á˹²ÕñÐͽøÆøÏûÉùÆ÷µÄÏûÉùÔÀí¡£
±¾ÎÄ»ùÓڱ߽çÔª·¨£¬ÀûÓÃSYSNOISEÉùѧÈí¼þ¶ÔÏûÉùÆ÷µÄÈýάģÐͽøÐзÂÕæ¼ÆË㣬·ÖÎöÁ˹²ÕñʽÏûÉùÆ÷µÄÇ»Ìå½á¹¹²ÎÊýºÍÔ²½Ç¶Ô¹²ÕñƵÂʵÄÓ°Ïì¼°Ç÷ÊÆ£¬ÒÔ¼°Î²¹ÜЧӦºÍÏûÉùÆ÷µÄ°²×°Î»ÖöÔÏûÉùÐÔÄܵÄÓ°Ï졣Ȼºó£¬ÔÚ´Ë»ù´¡ÉϽøÐÐÏûÉùÆ÷Éè¼ÆºÍ¸Ä½ø£¬ÒÔÂú×ã¼¼ÊõÒªÇó¡£
·ÖÎö¼ÆËãµÄ½á¹û±íÃ÷£¬Ç»Ìå½á¹¹²ÎÊýºÍÔ²½Ç´óС¶ÔÏûÉùÆ÷µÄ¹²ÕñƵÂÊÓÐÒ»¶¨µÄÓ°Ï죬Ëæ×ÅÇ»Ìå¸ß¶È»òºá½ØÃæ»ýµÄÔö¼Ó£¬¹²ÕñƵÂÊÏòµÍƵ·½ÏòÒƶ¯£¬¶ÔÓڹ̶¨µÄÇ»Ì壬Բ½ÇÔ½´ó¶Ô¹²ÕñƵÂʵÄÓ°ÏìÒ²Ô½´ó£¬Òò¶øÔÚʵ¼ÊµÄÉú²ú¼Ó¹¤Ê±£¬Ó¦Ê¹Ô²½Ç¾¡¿ÉÄÜСΪºÃ¡£½á¹ûÒ²±íÃ÷£¬¿¼ÂÇβ¹ÜЧӦºó£¬ÏûÉùÆ÷µÄ°²×°Î»ÖöÔÏûÉùÐÔÄÜÓÐןܴóµÄÓ°Ï죬ΪÁ˵õ½¸üΪÁ¼ºÃµÄÏûÉùÐÔÄÜ£¬ÏûÉùÆ÷Ó¦°²×°ÔÚ¾àÀëÖ÷¹ÜµÀ³ö¿Ú´¦½ÏÔ¶µÄλÖá£Í¬Ê±£¬µÃ³öÁËÁ½¹²ÕñÇ»´®ÁªÊ±£¬Æä¹²ÕñƵÂʲ»»áÏ໥¸ÉÈÅ¡£ÕâЩ½á¹ûΪÏûÉùÆ÷µÄÉè¼ÆÌṩÁËÒÀ¾Ý¡£
¹Ø¼ü´Ê£º ½øÆøÏûÉùÆ÷£¬¹²ÕñÇ»£¬±ß½çÔª·¨£¬Î²¹ÜЧӦ£¬´«ÉùËðʧ
ABSTRACT
With the development of vehicle noise control technology, engine intake noise control has become the emphasis. This paper has briefly introduced the situation of intake silencer Research and Application, expounded the intake noise engendering cause and the basic theory, and studied the principle of the resonant silencer.
Based on the BEM, the 3D models of the mufflers are calculated by using SYSNOISE software, the impact and trends of the Structural parameters and the fillet of resonator to the resonant frequency are analyzed, and the effects of the tail pipe and the installation location of muffler on the performances are also analyzed. Then design and improve the muffler based on this analysis, with satisfying the design request.
The results of the analysis show that the Structural parameters and the fillet of resonator have a little influence to the resonance frequency. With the height or the cross sectional area increasing, the resonant frequency moves to the low-frequency, for a fixed resonator, there is greater fillet, greater effect on the resonant frequency, so in the actual production and processing performances, it should make the fillet smaller. The results also show that the installation location of muffler has very great effect on the performances when Considers the effects of the tail, and the muffler should be installed far from the exit of the road for getting a better performance. At the same time, it shows that the resonant frequency will not interfere with each other when there two resonators are linked. These results provide a basis for the design of the muffler
Key words£º Intake silencer, resonator, BEM, tail pipe effect, transmission loss
Ŀ ¼
ÖÐÎÄÕªÒª ¢ñ
ABSTRACT ¢ò
1Ð÷ÂÛ 1
1.1ÒýÑÔ 1
1.2·¢¶¯»ú½øÆøÔëÉùµÄ²úÉú 2
1.3·¢¶¯»ú½øÆøÏûÉùÆ÷µÄÑо¿ÏÖ×´ 3
1.4±¾¿ÎÌâÑо¿µÄÄÚÈݺÍÄ¿µÄ 4
2Éùѧ»ù±¾ÀíÂÛ¼°·ÖÎö·½·¨ 5
2.1ÉùѧÀíÂ۵Ļù±¾¸ÅÄî 5
2.1.1Éùѹ 5
2.1.2Éù×迹ÂÊ 5
2.1.3ÉùÇ¿ºÍÉù¹¦ÂÊ 5
2.2Éù²¨·½³Ì 6
2.2.1Ô˶¯·½³Ì 6
2.2.2Á¬ÐøÐÔ·½³Ì 7
2.2.3Îï̬·½³Ì 7
2.3һάƽÃ沨ÀíÂÛ 8
2.4Éù¼¶ 9
2.4.1Éùѹ¼¶ 9
2.4.2ÉùÇ¿¼¶ 9
2.4.3Éù¹¦Âʼ¶ 9
2.4.4¸÷Éù¼¶Ö®¼äµÄ¹Øϵ 9
2.5ÏûÉùÆ÷´«ÉùËðʧµÄ¼ÆËã 9
2.5.1´«ÉùËðʧµÄ¶¨Òå 9
2.5.2µ¥Ç»À©ÕÅʽÏûÉùÆ÷´«ÉùËðʧµÄ¼ÆËã 10
2.5.3¹²ÕñʽÏûÉùÆ÷´«ÉùËðʧµÄ¼ÆËã 11
2.6·ÖÎö·½·¨ 14
2.6.1±ß½çÔª·¨¼ò½é 14
2.6.2 SYSNOISE¼ò½é 15
3¼ÆËã´«ÉùËðʧµÄÊýÖµ·½·¨ 16
3.1ÏûÉùÆ÷´«ÉùËðʧ¼ÆËã·½·¨ 16
3.2·½·¨µÄÑéÖ¤ 16
3.2.1Ö±¹ÜµÄÄ£Äâ¼ÆËã 16
3.2.2µ¥Ç»À©ÕÅʽÏûÉùÆ÷Ä£Äâ¼ÆËã 20
4Ö÷Òª²ÎÊý¶Ô¹²ÕñʽÏûÉùÆ÷ÏûÉùÐÔÄܵÄÓ°Ïì·ÖÎö 23
4.1¹²ÕñÇ»½á¹¹²ÎÊý¶Ô¹²ÕñƵÂʵÄÓ°Ïì 23
4.1.1¹²ÕñÇ»¸ß¶È¶Ô¹²ÕñƵÂʵÄÓ°Ïì 23
4.1.2¹²ÕñÇ»ºá½ØÃæ»ý¶Ô¹²ÕñƵÂʵÄÓ°Ïì 26
4.1.3Á¬½Ó¹@@¤¶È¸Ä±äʱÐÞÕý¹«Ê½µÄÑÏÕý 27
4.2Ô²½Ç¶ÔÏûÉùÐÔÄܵÄÓ°Ïì 28
4.2.1¹Ì¶¨Ç»Ìå³ß´çʱԲ½Ç´óС¶ÔÏûÉùÐÔÄܵÄÓ°Ïì 28
4.2.2¸Ä±äÇ»Ìå³ß´çʱԲ½Ç´óС¶ÔÏûÉùÐÔÄܵÄÓ°Ïì 30
4.3β¹ÜЧӦ¶ÔÏûÉùÐÔÄܵÄÓ°Ïì 31
4.4¹²ÕñÇ»°²×°Î»ÖöÔÏûÉùÐÔÄܵÄÓ°Ïì 34
5¹²Õñʽ½øÆøÏûÉùÆ÷Éè¼Æ 37
5.1Éè¼ÆÒªÇó¼°·½°¸·ÖÎö 37
5.2ÏûÉùÆ÷Éè¼Æ 37
5.2.1 ÏûÉùÆ÷µÄÉè¼Æ 37
5.2.2 ÏûÉùÆ÷µÄÉè¼Æ 40
5.2.3Á½¹²ÕñÇ»µÄ´®Áª 41
5.3С½á 44
6½áÂÛ 45
ÖÂл 46
²Î¿¼ÎÄÏ× 47
¸½Â¼¢ñ 48
¸½Â¼¢ò 49
Õª Òª
Ëæ×ÅÆû³µÔëÉù¿ØÖƼ¼ÊõµÄ·¢Õ¹£¬½øÆøÔëÉùÒѳÉΪÆû³µÔëÉù¿ØÖƵÄÖص㡣±¾Îļòµ¥½éÉÜÁ˽øÆøÏûÉùÆ÷µÄÑо¿ÓëÓ¦ÓõÄÏÖ×´£¬²ûÊöÁ˽øÆøÔëÉùµÄ²úÉú»úÀí¼°Æä»ù±¾ÀíÂÛ£¬Ñо¿Á˹²ÕñÐͽøÆøÏûÉùÆ÷µÄÏûÉùÔÀí¡£
±¾ÎÄ»ùÓڱ߽çÔª·¨£¬ÀûÓÃSYSNOISEÉùѧÈí¼þ¶ÔÏûÉùÆ÷µÄÈýάģÐͽøÐзÂÕæ¼ÆË㣬·ÖÎöÁ˹²ÕñʽÏûÉùÆ÷µÄÇ»Ìå½á¹¹²ÎÊýºÍÔ²½Ç¶Ô¹²ÕñƵÂʵÄÓ°Ïì¼°Ç÷ÊÆ£¬ÒÔ¼°Î²¹ÜЧӦºÍÏûÉùÆ÷µÄ°²×°Î»ÖöÔÏûÉùÐÔÄܵÄÓ°Ï졣Ȼºó£¬ÔÚ´Ë»ù´¡ÉϽøÐÐÏûÉùÆ÷Éè¼ÆºÍ¸Ä½ø£¬ÒÔÂú×ã¼¼ÊõÒªÇó¡£
·ÖÎö¼ÆËãµÄ½á¹û±íÃ÷£¬Ç»Ìå½á¹¹²ÎÊýºÍÔ²½Ç´óС¶ÔÏûÉùÆ÷µÄ¹²ÕñƵÂÊÓÐÒ»¶¨µÄÓ°Ï죬Ëæ×ÅÇ»Ìå¸ß¶È»òºá½ØÃæ»ýµÄÔö¼Ó£¬¹²ÕñƵÂÊÏòµÍƵ·½ÏòÒƶ¯£¬¶ÔÓڹ̶¨µÄÇ»Ì壬Բ½ÇÔ½´ó¶Ô¹²ÕñƵÂʵÄÓ°ÏìÒ²Ô½´ó£¬Òò¶øÔÚʵ¼ÊµÄÉú²ú¼Ó¹¤Ê±£¬Ó¦Ê¹Ô²½Ç¾¡¿ÉÄÜСΪºÃ¡£½á¹ûÒ²±íÃ÷£¬¿¼ÂÇβ¹ÜЧӦºó£¬ÏûÉùÆ÷µÄ°²×°Î»ÖöÔÏûÉùÐÔÄÜÓÐןܴóµÄÓ°Ï죬ΪÁ˵õ½¸üΪÁ¼ºÃµÄÏûÉùÐÔÄÜ£¬ÏûÉùÆ÷Ó¦°²×°ÔÚ¾àÀëÖ÷¹ÜµÀ³ö¿Ú´¦½ÏÔ¶µÄλÖá£Í¬Ê±£¬µÃ³öÁËÁ½¹²ÕñÇ»´®ÁªÊ±£¬Æä¹²ÕñƵÂʲ»»áÏ໥¸ÉÈÅ¡£ÕâЩ½á¹ûΪÏûÉùÆ÷µÄÉè¼ÆÌṩÁËÒÀ¾Ý¡£
¹Ø¼ü´Ê£º ½øÆøÏûÉùÆ÷£¬¹²ÕñÇ»£¬±ß½çÔª·¨£¬Î²¹ÜЧӦ£¬´«ÉùËðʧ
ABSTRACT
With the development of vehicle noise control technology, engine intake noise control has become the emphasis. This paper has briefly introduced the situation of intake silencer Research and Application, expounded the intake noise engendering cause and the basic theory, and studied the principle of the resonant silencer.
Based on the BEM, the 3D models of the mufflers are calculated by using SYSNOISE software, the impact and trends of the Structural parameters and the fillet of resonator to the resonant frequency are analyzed, and the effects of the tail pipe and the installation location of muffler on the performances are also analyzed. Then design and improve the muffler based on this analysis, with satisfying the design request.
The results of the analysis show that the Structural parameters and the fillet of resonator have a little influence to the resonance frequency. With the height or the cross sectional area increasing, the resonant frequency moves to the low-frequency, for a fixed resonator, there is greater fillet, greater effect on the resonant frequency, so in the actual production and processing performances, it should make the fillet smaller. The results also show that the installation location of muffler has very great effect on the performances when Considers the effects of the tail, and the muffler should be installed far from the exit of the road for getting a better performance. At the same time, it shows that the resonant frequency will not interfere with each other when there two resonators are linked. These results provide a basis for the design of the muffler
Key words£º Intake silencer, resonator, BEM, tail pipe effect, transmission loss
Ŀ ¼
ÖÐÎÄÕªÒª ¢ñ
ABSTRACT ¢ò
1Ð÷ÂÛ 1
1.1ÒýÑÔ 1
1.2·¢¶¯»ú½øÆøÔëÉùµÄ²úÉú 2
1.3·¢¶¯»ú½øÆøÏûÉùÆ÷µÄÑо¿ÏÖ×´ 3
1.4±¾¿ÎÌâÑо¿µÄÄÚÈݺÍÄ¿µÄ 4
2Éùѧ»ù±¾ÀíÂÛ¼°·ÖÎö·½·¨ 5
2.1ÉùѧÀíÂ۵Ļù±¾¸ÅÄî 5
2.1.1Éùѹ 5
2.1.2Éù×迹ÂÊ 5
2.1.3ÉùÇ¿ºÍÉù¹¦ÂÊ 5
2.2Éù²¨·½³Ì 6
2.2.1Ô˶¯·½³Ì 6
2.2.2Á¬ÐøÐÔ·½³Ì 7
2.2.3Îï̬·½³Ì 7
2.3һάƽÃ沨ÀíÂÛ 8
2.4Éù¼¶ 9
2.4.1Éùѹ¼¶ 9
2.4.2ÉùÇ¿¼¶ 9
2.4.3Éù¹¦Âʼ¶ 9
2.4.4¸÷Éù¼¶Ö®¼äµÄ¹Øϵ 9
2.5ÏûÉùÆ÷´«ÉùËðʧµÄ¼ÆËã 9
2.5.1´«ÉùËðʧµÄ¶¨Òå 9
2.5.2µ¥Ç»À©ÕÅʽÏûÉùÆ÷´«ÉùËðʧµÄ¼ÆËã 10
2.5.3¹²ÕñʽÏûÉùÆ÷´«ÉùËðʧµÄ¼ÆËã 11
2.6·ÖÎö·½·¨ 14
2.6.1±ß½çÔª·¨¼ò½é 14
2.6.2 SYSNOISE¼ò½é 15
3¼ÆËã´«ÉùËðʧµÄÊýÖµ·½·¨ 16
3.1ÏûÉùÆ÷´«ÉùËðʧ¼ÆËã·½·¨ 16
3.2·½·¨µÄÑéÖ¤ 16
3.2.1Ö±¹ÜµÄÄ£Äâ¼ÆËã 16
3.2.2µ¥Ç»À©ÕÅʽÏûÉùÆ÷Ä£Äâ¼ÆËã 20
4Ö÷Òª²ÎÊý¶Ô¹²ÕñʽÏûÉùÆ÷ÏûÉùÐÔÄܵÄÓ°Ïì·ÖÎö 23
4.1¹²ÕñÇ»½á¹¹²ÎÊý¶Ô¹²ÕñƵÂʵÄÓ°Ïì 23
4.1.1¹²ÕñÇ»¸ß¶È¶Ô¹²ÕñƵÂʵÄÓ°Ïì 23
4.1.2¹²ÕñÇ»ºá½ØÃæ»ý¶Ô¹²ÕñƵÂʵÄÓ°Ïì 26
4.1.3Á¬½Ó¹@@¤¶È¸Ä±äʱÐÞÕý¹«Ê½µÄÑÏÕý 27
4.2Ô²½Ç¶ÔÏûÉùÐÔÄܵÄÓ°Ïì 28
4.2.1¹Ì¶¨Ç»Ìå³ß´çʱԲ½Ç´óС¶ÔÏûÉùÐÔÄܵÄÓ°Ïì 28
4.2.2¸Ä±äÇ»Ìå³ß´çʱԲ½Ç´óС¶ÔÏûÉùÐÔÄܵÄÓ°Ïì 30
4.3β¹ÜЧӦ¶ÔÏûÉùÐÔÄܵÄÓ°Ïì 31
4.4¹²ÕñÇ»°²×°Î»ÖöÔÏûÉùÐÔÄܵÄÓ°Ïì 34
5¹²Õñʽ½øÆøÏûÉùÆ÷Éè¼Æ 37
5.1Éè¼ÆÒªÇó¼°·½°¸·ÖÎö 37
5.2ÏûÉùÆ÷Éè¼Æ 37
5.2.1 ÏûÉùÆ÷µÄÉè¼Æ 37
5.2.2 ÏûÉùÆ÷µÄÉè¼Æ 40
5.2.3Á½¹²ÕñÇ»µÄ´®Áª 41
5.3С½á 44
6½áÂÛ 45
ÖÂл 46
²Î¿¼ÎÄÏ× 47
¸½Â¼¢ñ 48
¸½Â¼¢ò 49
